EXCEPTION CAUGHT BY RENDERING LIBRARY

I can't explain what's going on so here are some clues around the issue.

StreamBuilder related?
Firebase related?
I refactored database (firebase end)
That's when the error started so I imagined it had to do with persistent data/cache.
So deleted Xcode build cache, derived data, hard clean.
ran flutter clean.
Thought it might have been parsing related.
Refactored JSON parsing.
Now I've taken out JSON parser.
Removed all portions of UI which was rendering JSON based values.
Now flutter run producing non deterministic, different UI, sometimes, if it even builds.
Days later now...

[ +121 ms] executing: /usr/bin/xcrun simctl install BD15C25F-03A0-4449-83CE-C7B2DEC3B76A /Users/fangadmin/Dropbox/Development/FangsKitchen/Projects/app_88barrels_flutter/build/ios/iphonesimulator/Runner.app
[+2102 ms] executing: /usr/bin/xcrun simctl launch BD15C25F-03A0-4449-83CE-C7B2DEC3B76A com.88Barrels.app --enable-dart-profiling --enable-checked-mode --observatory-port=0
[ +300 ms] com.88Barrels.app: 11092
[        ] Waiting for observatory port to be available...
[ +696 ms] [DEVICE LOG] 2018-09-26 18:35:49.176962-0700  localhost Runner[11092]: (QuartzCore) [com.apple.coreanimation:WindowServer] Initialized 2 displays
[  +11 ms] [DEVICE LOG] 2018-09-26 18:35:49.191230-0700  localhost Runner[11092]: (libMobileGestalt.dylib) libMobileGestalt MobileGestalt.c:890: MGIsDeviceOneOfType is not supported on this platform.
[        ] [DEVICE LOG] 2018-09-26 18:35:49.191289-0700  localhost Runner[11092]: (libMobileGestalt.dylib) MGIsDeviceOneOfType is not supported on this platform.
[   +8 ms] [DEVICE LOG] 2018-09-26 18:35:49.200426-0700  localhost Runner[11092]: (libAccessibility.dylib) [com.apple.Accessibility:AccessibilitySupport] Retrieving resting unlock: 0
[ +235 ms] [DEVICE LOG] 2018-09-26 18:35:49.435980-0700  localhost Runner[11092]: (UIKitCore) You've implemented -[<UIApplicationDelegate> application:performFetchWithCompletionHandler:], but you still need to add "fetch" to the list of your supported UIBackgroundModes in your Info.plist.
[        ] [DEVICE LOG] 2018-09-26 18:35:49.436177-0700  localhost Runner[11092]: (UIKitCore) You've implemented -[<UIApplicationDelegate> application:didReceiveRemoteNotification:fetchCompletionHandler:], but you still need to add "remote-notification" to the list of your supported UIBackgroundModes in your Info.plist.
[  +14 ms] [DEVICE LOG] 2018-09-26 18:35:49.450499-0700  localhost Runner[11092]: 5.5.0 - [Firebase/Analytics][I-ACS023007] Analytics v.50100000 started
[   +1 ms] 5.5.0 - [Firebase/Analytics][I-ACS023007] Analytics v.50100000 started
[   +3 ms] [DEVICE LOG] 2018-09-26 18:35:49.450593-0700  localhost Runner[11092]: 5.5.0 - [Firebase/Analytics][I-ACS023008] To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled (see http://goo.gl/RfcP7r)
[        ] 5.5.0 - [Firebase/Analytics][I-ACS023008] To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled (see http://goo.gl/RfcP7r)
[  +22 ms] [DEVICE LOG] 2018-09-26 18:35:49.478126-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a0, Description: SecItemDelete_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.479307-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a1, Description: SecItemAdd_ios
[   +2 ms] [DEVICE LOG] 2018-09-26 18:35:49.481912-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a2, Description: SecItemDelete_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.483934-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a3, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.484764-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a4, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.485535-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a5, Description: SecItemDelete_ios
[   +2 ms] [DEVICE LOG] 2018-09-26 18:35:49.487893-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a6, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.488619-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a7, Description: SecItemCopyMatching_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.489851-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a8, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.490653-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0a9, Description: SecItemDelete_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.491049-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> resuming, QOS(0x19)
[        ] [DEVICE LOG] 2018-09-26 18:35:49.491441-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0aa, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.492163-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0ab, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.492950-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0ac, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.492980-0700  localhost Runner[11092]: (CFNetwork) Faulting in NSHTTPCookieStorage singleton
[        ] [DEVICE LOG] 2018-09-26 18:35:49.493033-0700  localhost Runner[11092]: (CFNetwork) Faulting in CFHTTPCookieStorage singleton
[        ] [DEVICE LOG] 2018-09-26 18:35:49.493120-0700  localhost Runner[11092]: (CFNetwork) Creating default cookie storage with process/bundle identifier
[        ] [DEVICE LOG] 2018-09-26 18:35:49.493913-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0ad, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:49.494018-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:ATS] Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> {strength 1, tls 8, ct 0, sub 0, sig 0, ciphers 1, bundle 0, builtin 0}
[   +8 ms] [DEVICE LOG] 2018-09-26 18:35:49.500709-0700  localhost Runner[11092]: (CFNetwork) TIC Enabling TLS [1:0x600003f79d40]
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.502569-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0ae, Description: SecItemCopyMatching_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.504154-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0af, Description: SecItemCopyMatching_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.505703-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b0, Description: SecItemCopyMatching_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.506600-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b1, Description: SecItemCopyMatching_ios
[   +3 ms] [DEVICE LOG] 2018-09-26 18:35:49.509184-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Start [1:0x600003f79d40]
[        ] [DEVICE LOG] 2018-09-26 18:35:49.509790-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C1 play.googleapis.com:443 tcp, url hash: 253002a7, tls] start
[   +2 ms] [DEVICE LOG] 2018-09-26 18:35:49.514035-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C1] reporting state preparing
[   +2 ms] [DEVICE LOG] 2018-09-26 18:35:49.515523-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> setting up Connection 1
[  +45 ms] [DEVICE LOG] 2018-09-26 18:35:49.562644-0700  localhost Runner[11092]: (Flutter) flutter: Observatory listening on http://<IP_ADDRESS>:51314/
[   +2 ms] Observatory URL on device: http://<IP_ADDRESS>:51314/
[   +4 ms] Connecting to service protocol: http://<IP_ADDRESS>:51314/
[  +14 ms] [DEVICE LOG] 2018-09-26 18:35:49.571469-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_socket_handle_socket_event [C1.1:3] Socket received CONNECTED event
[        ] [DEVICE LOG] 2018-09-26 18:35:49.571798-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C1.1 <IP_ADDRESS>:443 in_progress socket-flow (satisfied)] Transport protocol connected
[        ] [DEVICE LOG] 2018-09-26 18:35:49.574226-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [1:0x600003f79d40]: 1, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:35:49.574561-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [1:0x600003f79d40]: 2, Pending(0)
[  +33 ms] [DEVICE LOG] 2018-09-26 18:35:49.617680-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [1:0x600003f79d40]: 2, Pending(0)
[   +2 ms] [DEVICE LOG] 2018-09-26 18:35:49.619520-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [1:0x600003f79d40]: 11, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:35:49.619701-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [1:0x600003f79d40]: 14, Pending(0)
[ +119 ms] [DEVICE LOG] 2018-09-26 18:35:49.739846-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b2, Description: SecTrustEvaluateIfNecessary
[        ] [DEVICE LOG] 2018-09-26 18:35:49.740579-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b3, Description: processing SCNetworkReachability notification
[        ] [DEVICE LOG] 2018-09-26 18:35:49.740664-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b4, Description: processing SCNetworkReachability notification
[   +9 ms] [DEVICE LOG] 2018-09-26 18:35:49.751027-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b5, Description: SecTrustEvaluateIfNecessaryFastAsync
[  +16 ms] Successfully connected to service protocol: http://<IP_ADDRESS>:51314/
[   +5 ms] getVM: {}
[   +2 ms] [DEVICE LOG] 2018-09-26 18:35:49.756608-0700  localhost Runner[11092]: (CFNetwork) System Trust Evaluation yielded status(0)
[        ] [DEVICE LOG] 2018-09-26 18:35:49.756673-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Trust Result [1:0x600003f79d40]: 0
[  +13 ms] getIsolate: {isolateId: isolates/390543210}
[   +8 ms] _flutter.listViews: {isolateId: isolates/390543210}
[   +3 ms] [DEVICE LOG] 2018-09-26 18:35:49.776700-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C1.1 <IP_ADDRESS>:443 in_progress socket-flow (satisfied)] Output protocol connected
[        ] [DEVICE LOG] 2018-09-26 18:35:49.776715-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b6, Description: SecTrustReportTLSAnalytics
[        ] [DEVICE LOG] 2018-09-26 18:35:49.777120-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C1] reporting state ready
[        ] [DEVICE LOG] 2018-09-26 18:35:49.777437-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [1:0x600003f79d40]: 20, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:35:49.778027-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Connected [1:0x600003f79d40]: Err(16)
[        ] [DEVICE LOG] 2018-09-26 18:35:49.778254-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Event [1:0x600003f79d40]: 1
[        ] [DEVICE LOG] 2018-09-26 18:35:49.778553-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Event [1:0x600003f79d40]: 8
[        ] [DEVICE LOG] 2018-09-26 18:35:49.779015-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Handshake Complete [1:0x600003f79d40]
[        ] [DEVICE LOG] 2018-09-26 18:35:49.780064-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:Coalescing] new connection to play.googleapis.com config 0x600000a63500
[        ] [DEVICE LOG] 2018-09-26 18:35:49.790220-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> now using Connection 1
[        ] [DEVICE LOG] 2018-09-26 18:35:49.790458-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> sent request, body S
[  +22 ms] [DEVICE LOG] 2018-09-26 18:35:49.791463-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C1.1 <IP_ADDRESS>:443 ready socket-flow (satisfied)] Output protocol connected
[  +52 ms] DevFS: Creating new filesystem on the device (null)
[   +1 ms] _createDevFS: {fsName: app_88barrels_flutter}
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:49.835302-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> received response, status 200 content K
[        ] [DEVICE LOG] 2018-09-26 18:35:49.835623-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> done using Connection 1
[        ] [DEVICE LOG] 2018-09-26 18:35:49.836434-0700  localhost Runner[11092]: (CFNetwork) Task <159C44F3-8A97-4552-ABD6-B72BD293E64A>.<1> response ended
[  +21 ms] DevFS: Created new filesystem on the device (file:///Users/fangadmin/Library/Developer/CoreSimulator/Devices/BD15C25F-03A0-4449-83CE-C7B2DEC3B76A/data/Containers/Data/Application/11FF4450-9513-460F-8BE9-B41B49F69F10/tmp/app_88barrels_flutterKapOua/app_88barrels_flutter/)
[   +2 ms] Updating assets
[ +345 ms] Syncing files to device iPhone 8...
[   +3 ms] DevFS: Starting sync from LocalDirectory: '/Users/fangadmin/Dropbox/Development/FangsKitchen/Projects/app_88barrels_flutter'
[        ] Scanning project files
[  +16 ms] Scanning package files
[ +204 ms] Scanning asset files
[   +1 ms] Scanning for deleted files
[  +17 ms] Compiling dart to kernel with 463 updated files
[   +8 ms] /Users/fangadmin/flutter/bin/cache/dart-sdk/bin/dart /Users/fangadmin/flutter/bin/cache/artifacts/engine/darwin-x64/frontend_server.dart.snapshot --sdk-root /Users/fangadmin/flutter/bin/cache/artifacts/engine/common/flutter_patched_sdk/ --incremental --strong --target=flutter --output-dill build/app.dill --packages /Users/fangadmin/Dropbox/Development/FangsKitchen/Projects/app_88barrels_flutter/.packages --filesystem-scheme org-dartlang-root
[        ] [DEVICE LOG] 2018-09-26 18:35:50.260401-0700  localhost Runner[11092]: 5.5.0 - [Firebase/Firestore][I-FST000001] The behavior for system Date objects stored in Firestore is going to change AND YOUR APP MAY BREAK.
[        ] [DEVICE LOG] To hide this warning and ensure your app does not break, you need to add the following code to your app before calling any other Cloud Firestore methods:
[   +3 ms] [DEVICE LOG]
[        ] [DEVICE LOG] let db = Firestore.firestore()
[        ] [DEVICE LOG] let settings = db.settings
[        ] [DEVICE LOG] settings.areTimestampsInSnapshotsEnabled = true
[        ] [DEVICE LOG] db.settings = settings
[        ] [DEVICE LOG]
[        ] [DEVICE LOG] With this change, timestamps stored in Cloud Firestore will be read back as Firebase Timestamp objects instead of as system Date objects. So you will also need to update code expecting a Date to instead expect a Timestamp. For example:
[        ] [DEVICE LOG]
[        ] [DEVICE LOG] // old:
[        ] [DEVICE LOG] let date: Date = documentSnapshot.get("created_at") as! Date
[        ] [DEVICE LOG] // new:
[        ] [DEVICE LOG] let timestamp: Timestamp = documentSnapshot.get("created_at") as! Timestamp
[        ] [DEVICE LOG] let date: Date = timestamp.dateValue()
[        ] [DEVICE LOG]
[        ] [DEVICE LOG] Please audit all existing usages of Date when you enable the new behavior. In a future release, the behavior will be changed to the new behavior, so if you do<…>
[  +19 ms] [DEVICE LOG] 2018-09-26 18:35:50.319694-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b7, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.439706-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b8, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.440664-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0b9, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.441530-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0ba, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.442689-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0bb, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.443341-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0bc, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.443925-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0bd, Description: SecItemDelete_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:50.444600-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0be, Description: SecItemDelete_ios
[        ] 5.5.0 - [Firebase/Firestore][I-FST000001] The behavior for system Date objects stored in Firestore is going to change AND YOUR APP MAY BREAK.
[        ] To hide this warning and ensure your app does not break, you need to add the following code to your app before calling any other Cloud Firestore methods:
[        ] let db = Firestore.firestore()
[        ] let settings = db.settings
[        ] settings.areTimestampsInSnapshotsEnabled = true
[        ] db.settings = settings
[        ] With this change, timestamps stored in Cloud Firestore will be read back as Firebase Timestamp objects instead of as system Date objects. So you will also need to update code expecting a Date to instead expect a Timestamp. For example:
[        ] // old:
[        ] let date: Date = documentSnapshot.get("created_at") as! Date
[        ] // new:
[        ] let timestamp: Timestamp = documentSnapshot.get("created_at") as! Timestamp
[        ] let date: Date = timestamp.dateValue()
[        ] Please audit all existing usages of Date when you enable the new behavior. In a future release, the behavior will be changed to the new behavior, so if you do<…>
[ +580 ms] [DEVICE LOG] 2018-09-26 18:35:51.109712-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d0bf, Description: SecItemAdd_ios
[  +96 ms] [DEVICE LOG] 2018-09-26 18:35:51.206711-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d100, Description: SecItemAdd_ios
[   +3 ms] [DEVICE LOG] 2018-09-26 18:35:51.209817-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d101, Description: SecItemUpdate_ios
[   +5 ms] [DEVICE LOG] 2018-09-26 18:35:51.215420-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d102, Description: SecItemUpdate_ios
[   +4 ms] [DEVICE LOG] 2018-09-26 18:35:51.219745-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d103, Description: SecItemCopyMatching_ios
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:51.220801-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d104, Description: SecItemCopyMatching_ios
[  +48 ms] [DEVICE LOG] 2018-09-26 18:35:51.268950-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d105, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:51.269798-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d106, Description: SecItemCopyMatching_ios
[        ] [DEVICE LOG] 2018-09-26 18:35:51.270491-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d107, Description: SecItemAdd_ios
[ +544 ms] [DEVICE LOG] 2018-09-26 18:35:51.814767-0700  localhost Runner[11092]: (Flutter) flutter: ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
[        ] flutter: ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
[   +3 ms] [DEVICE LOG] 2018-09-26 18:35:51.819158-0700  localhost Runner[11092]: (Flutter) flutter: The following assertion was thrown during performLayout():
[        ] flutter: The following assertion was thrown during performLayout():
[        ] [DEVICE LOG] 2018-09-26 18:35:51.819271-0700  localhost Runner[11092]: (Flutter) flutter: type 'double' is not a subtype of type 'String'
[        ] flutter: type 'double' is not a subtype of type 'String'
[  +10 ms] [DEVICE LOG] 2018-09-26 18:35:51.829881-0700  localhost Runner[11092]: (Flutter) flutter:
[        ] flutter:
[        ] [DEVICE LOG] 2018-09-26 18:35:51.830005-0700  localhost Runner[11092]: (Flutter) flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially
[        ] [DEVICE LOG] 2018-09-26 18:35:51.830078-0700  localhost Runner[11092]: (Flutter) flutter: more information in this error message to help you determine and fix the underlying cause.
[        ] flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially
[        ] flutter: more information in this error message to help you determine and fix the underlying cause.
[        ] [DEVICE LOG] 2018-09-26 18:35:51.830265-0700  localhost Runner[11092]: (Flutter) flutter: In either case, please report this assertion by filing a bug on GitHub:
[        ] [DEVICE LOG] 2018-09-26 18:35:51.830424-0700  localhost Runner[11092]: (Flutter) flutter:   https://github.com/flutter/flutter/issues/new
[        ] [DEVICE LOG] 2018-09-26 18:35:51.830605-0700  localhost Runner[11092]: (Flutter) flutter:
[        ] [DEVICE LOG] 2018-09-26 18:35:51.830701-0700  localhost Runner[11092]: (Flutter) flutter: When the exception was thrown, this was the stack:
[        ] flutter: In either case, please report this assertion by filing a bug on GitHub:
[        ] flutter:   https://github.com/flutter/flutter/issues/new
[        ] flutter:
[        ] flutter: When the exception was thrown, this was the stack:
[   +4 ms] [DEVICE LOG] 2018-09-26 18:35:51.835642-0700  localhost Runner[11092]: (Flutter) flutter: #0      WhiskyValue.tastingPriceOz (package:app_88barrels_flutter/whisky_value.dart:41:33)
[        ] flutter: #0      WhiskyValue.tastingPriceOz (package:app_88barrels_flutter/whisky_value.dart:41:33)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.835830-0700  localhost Runner[11092]: (Flutter) flutter: #1      whiskyAttributesRow (package:app_88barrels_flutter/screens/whisky_list.dart:113:43)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.836038-0700  localhost Runner[11092]: (Flutter) flutter: #2      buildWhiskyList.<anonymous closure> (package:app_88barrels_flutter/screens/whisky_list.dart:53:21)
[        ] flutter: #1      whiskyAttributesRow (package:app_88barrels_flutter/screens/whisky_list.dart:113:43)
[        ] flutter: #2      buildWhiskyList.<anonymous closure> (package:app_88barrels_flutter/screens/whisky_list.dart:53:21)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.836352-0700  localhost Runner[11092]: (Flutter) flutter: #3      SliverChildBuilderDelegate.build (package:flutter/src/widgets/sliver.dart:258:20)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.836715-0700  localhost Runner[11092]: (Flutter) flutter: #4      SliverMultiBoxAdaptorElement._build.<anonymous closure> (package:flutter/src/widgets/sliver.dart:783:67)
[        ] flutter: #3      SliverChildBuilderDelegate.build (package:flutter/src/widgets/sliver.dart:258:20)
[        ] flutter: #4      SliverMultiBoxAdaptorElement._build.<anonymous closure> (package:flutter/src/widgets/sliver.dart:783:67)
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:51.837448-0700  localhost Runner[11092]: (Flutter) flutter: #5      _HashMap.putIfAbsent (dart:collection/runtime/libcollection_patch.dart:143:29)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.837774-0700  localhost Runner[11092]: (Flutter) flutter: #6      SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:783:26)
[        ] flutter: #5      _HashMap.putIfAbsent (dart:collection/runtime/libcollection_patch.dart:143:29)
[        ] flutter: #6      SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:783:26)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.837956-0700  localhost Runner[11092]: (Flutter) flutter: #7      SliverMultiBoxAdaptorElement.createChild.<anonymous closure> (package:flutter/src/widgets/sliver.dart:796:55)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.838114-0700  localhost Runner[11092]: (Flutter) flutter: #8      BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2235:19)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.838478-0700  localhost Runner[11092]: (Flutter) flutter: #9      SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:789:11)
[        ] flutter: #7      SliverMultiBoxAdaptorElement.createChild.<anonymous closure> (package:flutter/src/widgets/sliver.dart:796:55)
[        ] flutter: #8      BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2235:19)
[        ] flutter: #9      SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:789:11)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.839550-0700  localhost Runner[11092]: (Flutter) flutter: #10     RenderSliverMultiBoxAdaptor._createOrObtainChild.<anonymous closure> (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:254:23)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.840177-0700  localhost Runner[11092]: (Flutter) flutter: #11     RenderObject.invokeLayoutCallback.<anonymous closure> (package:flutter/src/rendering/object.dart:1727:58)
[        ] flutter: #10     RenderSliverMultiBoxAdaptor._createOrObtainChild.<anonymous closure> (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:254:23)
[        ] flutter: #11     RenderObject.invokeLayoutCallback.<anonymous closure> (package:flutter/src/rendering/object.dart:1727:58)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.840749-0700  localhost Runner[11092]: (Flutter) flutter: #12     PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:796:15)
[        ] flutter: #12     PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:796:15)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.841335-0700  localhost Runner[11092]: (Flutter) flutter: #13     RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:1727:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.841645-0700  localhost Runner[11092]: (Flutter) flutter: #14     RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:243:5)
[        ] flutter: #13     RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:1727:13)
[        ] flutter: #14     RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:243:5)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.842383-0700  localhost Runner[11092]: (Flutter) flutter: #15     RenderSliverMultiBoxAdaptor.addInitialChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:321:5)
[        ] flutter: #15     RenderSliverMultiBoxAdaptor.addInitialChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:321:5)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.843286-0700  localhost Runner[11092]: (Flutter) flutter: #16     RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:78:12)
[        ] flutter: #16     RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:78:12)
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:51.843712-0700  localhost Runner[11092]: (Flutter) flutter: #17     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.844166-0700  localhost Runner[11092]: (Flutter) flutter: #18     RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:182:11)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.844768-0700  localhost Runner[11092]: (Flutter) flutter: #19     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #17     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #18     RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:182:11)
[        ] flutter: #19     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[   +1 ms] [DEVICE LOG] 2018-09-26 18:35:51.845491-0700  localhost Runner[11092]: (Flutter) flutter: #20     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:405:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.845923-0700  localhost Runner[11092]: (Flutter) flutter: #21     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1320:12)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.847432-0700  localhost Runner[11092]: (Flutter) flutter: #22     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1238:20)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.848440-0700  localhost Runner[11092]: (Flutter) flutter: #23     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #20     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:405:13)
[        ] flutter: #21     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1320:12)
[        ] flutter: #22     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1238:20)
[        ] flutter: #23     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.849425-0700  localhost Runner[11092]: (Flutter) flutter: #24     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #24     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[  +28 ms] [DEVICE LOG] 2018-09-26 18:35:51.851040-0700  localhost Runner[11092]: (Flutter) flutter: #25     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.853068-0700  localhost Runner[11092]: (Flutter) flutter: #26     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.853582-0700  localhost Runner[11092]: (Flutter) flutter: #27     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.854127-0700  localhost Runner[11092]: (Flutter) flutter: #28     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.854756-0700  localhost Runner[11092]: (Flutter) flutter: #29     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.855049-0700  localhost Runner[11092]: (Flutter) flutter: #30     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.856247-0700  localhost Runner[11092]: (Flutter) flutter: #31     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.856637-0700  localhost Runner[11092]: (Flutter) flutter: #32     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.857408-0700  localhost Runner[11092]: (Flutter) flutter: #33     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.857834-0700  localhost Runner[11092]: (Flutter) flutter: #34     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.858124-0700  localhost Runner[11092]: (Flutter) flutter: #35     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.858306-0700  localhost Runner[11092]: (Flutter) flutter: #36     RenderSliverFixedExtentBoxAdaptor.performLayout (package:flutter/src/rendering/sliver_fixed_extent_list.dart:199:18)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.858606-0700  localhost Runner[11092]: (Flutter) flutter: #37     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.859081-0700  localhost Runner[11092]: (Flutter) flutter: #38     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:405:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.859442-0700  localhost Runner[11092]: (Flutter) flutter: #39     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1320:12)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.859838-0700  localhost Runner[11092]: (Flutter) flutter: #40     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1238:20)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.860612-0700  localhost Runner[11092]: (Flutter) flutter: #41     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.861204-0700  localhost Runner[11092]: (Flutter) flutter: #42     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.861415-0700  localhost Runner[11092]: (Flutter) flutter: #43     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.861627-0700  localhost Runner[11092]: (Flutter) flutter: #44     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.861808-0700  localhost Runner[11092]: (Flutter) flutter: #45     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.862726-0700  localhost Runner[11092]: (Flutter) flutter: #46     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.863837-0700  localhost Runner[11092]: (Flutter) flutter: #47     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.864053-0700  localhost Runner[11092]: (Flutter) flutter: #48     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.864268-0700  localhost Runner[11092]: (Flutter) flutter: #49     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.864464-0700  localhost Runner[11092]: (Flutter) flutter: #50     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.864619-0700  localhost Runner[11092]: (Flutter) flutter: #51     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.864764-0700  localhost Runner[11092]: (Flutter) flutter: #52     MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:141:11)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.864917-0700  localhost Runner[11092]: (Flutter) flutter: #53     _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:338:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.865051-0700  localhost Runner[11092]: (Flutter) flutter: #54     MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:211:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.865177-0700  localhost Runner[11092]: (Flutter) flutter: #55     RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:355:14)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.865329-0700  localhost Runner[11092]: (Flutter) flutter: #56     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.865486-0700  localhost Runner[11092]: (Flutter) flutter: #57     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.865696-0700  localhost Runner[11092]: (Flutter) flutter: #58     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.865858-0700  localhost Runner[11092]: (Flutter) flutter: #59     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866002-0700  localhost Runner[11092]: (Flutter) flutter: #60     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1192:11)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866165-0700  localhost Runner[11092]: (Flutter) flutter: #61     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866333-0700  localhost Runner[11092]: (Flutter) flutter: #62     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866480-0700  localhost Runner[11092]: (Flutter) flutter: #63     RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1506:7)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866650-0700  localhost Runner[11092]: (Flutter) flutter: #64     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:765:18)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866791-0700  localhost Runner[11092]: (Flutter) flutter: #65     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:270:19)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.866960-0700  localhost Runner[11092]: (Flutter) flutter: #66     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:654:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.867101-0700  localhost Runner[11092]: (Flutter) flutter: #67     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:208:5)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.867266-0700  localhost Runner[11092]: (Flutter) flutter: #68     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.867394-0700  localhost Runner[11092]: (Flutter) flutter: #69     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.867542-0700  localhost Runner[11092]: (Flutter) flutter: #70     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:842:5)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.867695-0700  localhost Runner[11092]: (Flutter) flutter: #71     _invoke (dart:ui/hooks.dart:128:13)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.867824-0700  localhost Runner[11092]: (Flutter) flutter: #72     _drawFrame (dart:ui/hooks.dart:117:3)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.877993-0700  localhost Runner[11092]: (Flutter) flutter:
[        ] [DEVICE LOG] 2018-09-26 18:35:51.878220-0700  localhost Runner[11092]: (Flutter) flutter: The following RenderObject was being processed when the exception was fired:
[        ] [DEVICE LOG] 2018-09-26 18:35:51.878432-0700  localhost Runner[11092]: (Flutter) flutter:   RenderSliverList#703b0 relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT
[        ] [DEVICE LOG] 2018-09-26 18:35:51.878614-0700  localhost Runner[11092]: (Flutter) flutter:   creator: SliverList ← MediaQuery ← SliverPadding ← Viewport ← _ScrollableScope ←
[        ] [DEVICE LOG] 2018-09-26 18:35:51.878799-0700  localhost Runner[11092]: (Flutter) flutter:   IgnorePointer-[GlobalKey#0f959] ← Semantics ← Listener ← _GestureSemantics ←
[        ] [DEVICE LOG] 2018-09-26 18:35:51.879317-0700  localhost Runner[11092]: (Flutter) flutter:   RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#089b2] ←
[        ] [DEVICE LOG] 2018-09-26 18:35:51.879735-0700  localhost Runner[11092]: (Flutter) flutter:   _ScrollSemantics-[GlobalKey#fa2c5] ← Scrollable ← ⋯
[        ] [DEVICE LOG] 2018-09-26 18:35:51.879894-0700  localhost Runner[11092]: (Flutter) flutter:   parentData: paintOffset=Offset(0.0, 0.0) (can use size)
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880021-0700  localhost Runner[11092]: (Flutter) flutter:   constraints: SliverConstraints(AxisDirection.down, GrowthDirection.forward, ScrollDirection.idle,
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880218-0700  localhost Runner[11092]: (Flutter) flutter:   scrollOffset: 0.0, remainingPaintExtent: 543.0, crossAxisExtent: 375.0, crossAxisDirection:
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880325-0700  localhost Runner[11092]: (Flutter) flutter:   AxisDirection.right, viewportMainAxisExtent: 543.0, remainingCacheExtent: 793.0 cacheOrigin: 0.0 )
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880434-0700  localhost Runner[11092]: (Flutter) flutter:   geometry: null
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880582-0700  localhost Runner[11092]: (Flutter) flutter:   no children current live
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880692-0700  localhost Runner[11092]: (Flutter) flutter: This RenderObject has no descendants.
[        ] [DEVICE LOG] 2018-09-26 18:35:51.880976-0700  localhost Runner[11092]: (Flutter) flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
[        ] flutter: #25     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #26     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #27     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #28     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #29     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #30     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #31     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #32     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #33     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #34     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #35     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #36     RenderSliverFixedExtentBoxAdaptor.performLayout (package:flutter/src/rendering/sliver_fixed_extent_list.dart:199:18)
[        ] flutter: #37     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #38     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:405:13)
[        ] flutter: #39     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1320:12)
[        ] flutter: #40     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1238:20)
[        ] flutter: #41     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #42     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #43     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #44     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #45     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #46     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #47     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #48     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #49     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #50     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #51     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #52     MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:141:11)
[        ] flutter: #53     _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:338:7)
[        ] flutter: #54     MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:211:7)
[        ] flutter: #55     RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:355:14)
[        ] flutter: #56     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #57     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #58     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #59     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #60     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1192:11)
[        ] flutter: #61     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
[        ] flutter: #62     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
[        ] flutter: #63     RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1506:7)
[        ] flutter: #64     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:765:18)
[        ] flutter: #65     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:270:19)
[        ] flutter: #66     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:654:13)
[        ] flutter: #67     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:208:5)
[        ] flutter: #68     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
[        ] flutter: #69     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
[        ] flutter: #70     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:842:5)
[        ] flutter: #71     _invoke (dart:ui/hooks.dart:128:13)
[        ] flutter: #72     _drawFrame (dart:ui/hooks.dart:117:3)
[        ] flutter:
[        ] flutter: The following RenderObject was being processed when the exception was fired:
[        ] flutter:   RenderSliverList#703b0 relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT
[        ] flutter:   creator: SliverList ← MediaQuery ← SliverPadding ← Viewport ← _ScrollableScope ←
[        ] flutter:   IgnorePointer-[GlobalKey#0f959] ← Semantics ← Listener ← _GestureSemantics ←
[        ] flutter:   RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#089b2] ←
[        ] flutter:   _ScrollSemantics-[GlobalKey#fa2c5] ← Scrollable ← ⋯
[        ] flutter:   parentData: paintOffset=Offset(0.0, 0.0) (can use size)
[        ] flutter:   constraints: SliverConstraints(AxisDirection.down, GrowthDirection.forward, ScrollDirection.idle,
[        ] flutter:   scrollOffset: 0.0, remainingPaintExtent: 543.0, crossAxisExtent: 375.0, crossAxisDirection:
[        ] flutter:   AxisDirection.right, viewportMainAxisExtent: 543.0, remainingCacheExtent: 793.0 cacheOrigin: 0.0 )
[        ] flutter:   geometry: null
[        ] flutter:   no children current live
[        ] flutter: This RenderObject has no descendants.
[        ] flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
[        ] [DEVICE LOG] 2018-09-26 18:35:51.889106-0700  localhost Runner[11092]: (Flutter) flutter: Another exception was thrown: NoSuchMethodError: The getter 'scrollOffsetCorrection' was called on null.
[        ] [DEVICE LOG] 2018-09-26 18:35:51.889733-0700  localhost Runner[11092]: (Flutter) flutter: Another exception was thrown: NoSuchMethodError: The method 'debugAssertIsValid' was called on null.
[        ] flutter: Another exception was thrown: NoSuchMethodError: The getter 'scrollOffsetCorrection' was called on null.
[        ] flutter: Another exception was thrown: NoSuchMethodError: The method 'debugAssertIsValid' was called on null.
[  +27 ms] [DEVICE LOG] 2018-09-26 18:35:51.919528-0700  localhost Runner[11092]: (Flutter) flutter: Another exception was thrown: NoSuchMethodError: The getter 'visible' was called on null.
[        ] flutter: Another exception was thrown: NoSuchMethodError: The getter 'visible' was called on null.
[  +25 ms] [DEVICE LOG] 2018-09-26 18:35:51.945165-0700  localhost Runner[11092]: (Flutter) flutter: Another exception was thrown: NoSuchMethodError: The getter 'visible' was called on null.
[        ] flutter: Another exception was thrown: NoSuchMethodError: The getter 'visible' was called on null.
[ +503 ms] Updating files
[ +430 ms] [DEVICE LOG] 2018-09-26 18:35:52.868537-0700  localhost Runner[11092]: (Flutter) [VERBOSE-2:shell.cc(181)] Dart Error: Unhandled exception:
[        ] [DEVICE LOG] NoSuchMethodError: The getter 'visible' was called on null.
[        ] [DEVICE LOG] Receiver: null
[        ] [DEVICE LOG] Tried calling: visible
[        ] [DEVICE LOG] #0      Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:48:5)
[        ] [DEVICE LOG] #1      RenderViewportBase.hitTestChildren (package:flutter/src/rendering/viewport.dart:572:26)
[        ] [DEVICE LOG] #2      RenderBox.hitTest (package:flutter/src/rendering/box.dart:1924:11)
[        ] [DEVICE LOG] #3      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.hitTestChildren (package:flutter/src/rendering/proxy_box.dart:117:19)
[        ] [DEVICE LOG] #4      RenderBox.hitTest (package:flutter/src/rendering/box.dart:1924:11)
[        ] [DEVICE LOG] #5      RenderIgnorePointer.hitTest (package:flutter/src/rendering/proxy_box.dart:2780:37)
[        ] [DEVICE LOG] #6      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.hitTestChildren (package:flutter/src/rendering/proxy_box.dart:117:19)
[        ] [DEVICE LOG] #7      RenderBox.hitTest (package:flutter/src/rendering/box.dart:1924:11)
[        ] [DEVICE LOG] #8      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderPro<…>
[        ] [VERBOSE-2:shell.cc(181)] Dart Error: Unhandled exception:
[        ] NoSuchMethodError: The getter 'visible' was called on null.
[        ] Receiver: null
[        ] Tried calling: visible
[        ] #0      Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:48:5)
[        ] #1      RenderViewportBase.hitTestChildren (package:flutter/src/rendering/viewport.dart:572:26)
[        ] #2      RenderBox.hitTest (package:flutter/src/rendering/box.dart:1924:11)
[        ] #3      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.hitTestChildren (package:flutter/src/rendering/proxy_box.dart:117:19)
[        ] #4      RenderBox.hitTest (package:flutter/src/rendering/box.dart:1924:11)
[        ] #5      RenderIgnorePointer.hitTest (package:flutter/src/rendering/proxy_box.dart:2780:37)
[        ] #6      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.hitTestChildren (package:flutter/src/rendering/proxy_box.dart:117:19)
[        ] #7      RenderBox.hitTest (package:flutter/src/rendering/box.dart:1924:11)
[        ] #8      _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderPro<…>
[ +418 ms] DevFS: Sync finished
[        ] Syncing files to device iPhone 8... (completed)
[   +1 ms] Synced 14.6MB.
[   +1 ms] _flutter.listViews: {isolateId: isolates/390543210}
[   +4 ms] Connected to _flutterView/0x7fe99ed098d8.
[        ] 🔥  To hot reload changes while running, press "r". To hot restart (and rebuild state), press "R".
[   +1 ms] An Observatory debugger and profiler on iPhone 8 is available at: http://<IP_ADDRESS>:51314/
[        ] For a more detailed help message, press "h". To detach, press "d"; to quit, press "q".
[+10852 ms] [DEVICE LOG] 2018-09-26 18:36:04.164177-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> resuming, QOS(0x9)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.165157-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:ATS] Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> {strength 1, tls 8, ct 0, sub 0, sig 0, ciphers 1, bundle 0, builtin 0}
[        ] [DEVICE LOG] 2018-09-26 18:36:04.165564-0700  localhost Runner[11092]: (CFNetwork) TIC Enabling TLS [2:0x600003f6c6c0]
[        ] [DEVICE LOG] 2018-09-26 18:36:04.165702-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Start [2:0x600003f6c6c0]
[        ] [DEVICE LOG] 2018-09-26 18:36:04.165870-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C2 app-measurement.com:443 tcp, url hash: 748ce75d, tls] start
[   +1 ms] [DEVICE LOG] 2018-09-26 18:36:04.166806-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C2] reporting state preparing
[   +1 ms] [DEVICE LOG] 2018-09-26 18:36:04.168372-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> setting up Connection 2
[  +17 ms] [DEVICE LOG] 2018-09-26 18:36:04.186351-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_socket_handle_socket_event [C2.1:3] Socket received CONNECTED event
[        ] [DEVICE LOG] 2018-09-26 18:36:04.186643-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C2.1 <IP_ADDRESS>:443 in_progress socket-flow (satisfied)] Transport protocol connected
[   +3 ms] [DEVICE LOG] 2018-09-26 18:36:04.189132-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [2:0x600003f6c6c0]: 1, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.189536-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [2:0x600003f6c6c0]: 2, Pending(0)
[  +40 ms] [DEVICE LOG] 2018-09-26 18:36:04.229120-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [2:0x600003f6c6c0]: 2, Pending(0)
[   +3 ms] [DEVICE LOG] 2018-09-26 18:36:04.231618-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [2:0x600003f6c6c0]: 11, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.232593-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [2:0x600003f6c6c0]: 14, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.233560-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d108, Description: SecTrustEvaluateIfNecessary
[   +6 ms] [DEVICE LOG] 2018-09-26 18:36:04.241307-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d109, Description: SecTrustEvaluateIfNecessaryFastAsync
[   +5 ms] [DEVICE LOG] 2018-09-26 18:36:04.246450-0700  localhost Runner[11092]: (CFNetwork) System Trust Evaluation yielded status(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.246605-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Trust Result [2:0x600003f6c6c0]: 0
[  +16 ms] [DEVICE LOG] 2018-09-26 18:36:04.263143-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d10a, Description: SecTrustReportTLSAnalytics
[        ] [DEVICE LOG] 2018-09-26 18:36:04.263524-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C2.1 <IP_ADDRESS>:443 in_progress socket-flow (satisfied)] Output protocol connected
[   +1 ms] [DEVICE LOG] 2018-09-26 18:36:04.263965-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C2] reporting state ready
[        ] [DEVICE LOG] 2018-09-26 18:36:04.264600-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [2:0x600003f6c6c0]: 20, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.264835-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Connected [2:0x600003f6c6c0]: Err(16)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.264980-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Event [2:0x600003f6c6c0]: 1
[        ] [DEVICE LOG] 2018-09-26 18:36:04.265261-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Event [2:0x600003f6c6c0]: 8
[        ] [DEVICE LOG] 2018-09-26 18:36:04.265492-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Handshake Complete [2:0x600003f6c6c0]
[        ] [DEVICE LOG] 2018-09-26 18:36:04.266267-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:Coalescing] new connection to app-measurement.com config 0x600000bc4ce0
[        ] [DEVICE LOG] 2018-09-26 18:36:04.266991-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> now using Connection 2
[        ] [DEVICE LOG] 2018-09-26 18:36:04.267190-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> sent request, body N
[        ] [DEVICE LOG] 2018-09-26 18:36:04.267274-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C2.1 <IP_ADDRESS>:443 ready socket-flow (satisfied)] Output protocol connected
[  +40 ms] [DEVICE LOG] 2018-09-26 18:36:04.308176-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> received response, status 200 content K
[   +2 ms] [DEVICE LOG] 2018-09-26 18:36:04.309294-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> done using Connection 2
[        ] [DEVICE LOG] 2018-09-26 18:36:04.310023-0700  localhost Runner[11092]: (CFNetwork) Task <83576EF8-38B0-433A-BF72-6AD21E9B8AB2>.<1> response ended
[  +51 ms] [DEVICE LOG] 2018-09-26 18:36:04.362220-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> resuming, QOS(0x9)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.363005-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:ATS] Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> {strength 1, tls 8, ct 0, sub 0, sig 0, ciphers 1, bundle 0, builtin 0}
[        ] [DEVICE LOG] 2018-09-26 18:36:04.363409-0700  localhost Runner[11092]: (CFNetwork) TIC Enabling TLS [3:0x600003f64a80]
[        ] [DEVICE LOG] 2018-09-26 18:36:04.363485-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Start [3:0x600003f64a80]
[        ] [DEVICE LOG] 2018-09-26 18:36:04.363660-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C3 app-measurement.com:443 tcp, url hash: 414bfca9, tls] start
[   +1 ms] [DEVICE LOG] 2018-09-26 18:36:04.364694-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C3] reporting state preparing
[        ] [DEVICE LOG] 2018-09-26 18:36:04.366288-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> setting up Connection 3
[  +16 ms] [DEVICE LOG] 2018-09-26 18:36:04.382656-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_socket_handle_socket_event [C3.1:3] Socket received CONNECTED event
[        ] [DEVICE LOG] 2018-09-26 18:36:04.382917-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C3.1 <IP_ADDRESS>:443 in_progress socket-flow (satisfied)] Transport protocol connected
[   +3 ms] [DEVICE LOG] 2018-09-26 18:36:04.385795-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [3:0x600003f64a80]: 1, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.386720-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [3:0x600003f64a80]: 2, Pending(0)
[  +36 ms] [DEVICE LOG] 2018-09-26 18:36:04.422774-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [3:0x600003f64a80]: 2, Pending(0)
[   +1 ms] [DEVICE LOG] 2018-09-26 18:36:04.425118-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [3:0x600003f64a80]: 11, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.425363-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [3:0x600003f64a80]: 14, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.425863-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d10b, Description: SecTrustEvaluateIfNecessary
[   +5 ms] [DEVICE LOG] 2018-09-26 18:36:04.431369-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d10c, Description: SecTrustEvaluateIfNecessaryFastAsync
[   +5 ms] [DEVICE LOG] 2018-09-26 18:36:04.437031-0700  localhost Runner[11092]: (CFNetwork) System Trust Evaluation yielded status(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.437141-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Trust Result [3:0x600003f64a80]: 0
[  +15 ms] [DEVICE LOG] 2018-09-26 18:36:04.451893-0700  localhost Runner[11092]: (Runner) Created Activity ID: 0x1d10d, Description: SecTrustReportTLSAnalytics
[        ] [DEVICE LOG] 2018-09-26 18:36:04.452079-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C3.1 <IP_ADDRESS>:443 in_progress socket-flow (satisfied)] Output protocol connected
[        ] [DEVICE LOG] 2018-09-26 18:36:04.452394-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C3] reporting state ready
[        ] [DEVICE LOG] 2018-09-26 18:36:04.453027-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Event [3:0x600003f64a80]: 20, Pending(0)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.453211-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Connected [3:0x600003f64a80]: Err(16)
[        ] [DEVICE LOG] 2018-09-26 18:36:04.453447-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Event [3:0x600003f64a80]: 1
[        ] [DEVICE LOG] 2018-09-26 18:36:04.453558-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Event [3:0x600003f64a80]: 8
[        ] [DEVICE LOG] 2018-09-26 18:36:04.453699-0700  localhost Runner[11092]: (CFNetwork) TIC TLS Handshake Complete [3:0x600003f64a80]
[        ] [DEVICE LOG] 2018-09-26 18:36:04.454170-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:Coalescing] new connection to app-measurement.com config 0x600000b9bec0
[        ] [DEVICE LOG] 2018-09-26 18:36:04.454686-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> now using Connection 3
[        ] [DEVICE LOG] 2018-09-26 18:36:04.454901-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> sent request, body S
[        ] [DEVICE LOG] 2018-09-26 18:36:04.455174-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_connected [C3.1 <IP_ADDRESS>:443 ready socket-flow (satisfied)] Output protocol connected
[  +39 ms] [DEVICE LOG] 2018-09-26 18:36:04.495527-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> received response, status 204 content U
[        ] [DEVICE LOG] 2018-09-26 18:36:04.495605-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> done using Connection 3
[        ] [DEVICE LOG] 2018-09-26 18:36:04.495774-0700  localhost Runner[11092]: (CFNetwork) Task <4CCAC56A-77E1-4BB5-B1C4-3F761ACB287F>.<1> response ended
[+119958 ms] [DEVICE LOG] 2018-09-26 18:38:04.454964-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:Coalescing] success removing entry for host app-measurement.com config 0x600000bc4ce0
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455198-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Cancel [2:0x600003f6c6c0]
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455319-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C2 app-measurement.com:443 tcp, url hash: 748ce75d, tls] cancel
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455677-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C2 app-measurement.com:443 tcp, url hash: 748ce75d, tls] cancelled
[        ] [DEVICE LOG] 	[C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443]
[        ] [DEVICE LOG] 	Connected Path: satisfied (Path is satisfied), interface: en0
[        ] [DEVICE LOG] 	Duration: 120.288s, DNS @0.000s took 0.002s, TCP @0.004s took 0.016s, TLS took 0.077s
[        ] [DEVICE LOG] 	bytes in/out: 3877/822, packets in/out: 10/9, rtt: 0.014s, retransmitted packets: 1, out-of-order packets: 0
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455767-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] path:start
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455818-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] path:satisfied
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455852-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] resolver:start_dns
[        ] 	[C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443]
[        ] 	Connected Path: satisfied (Path is satisfied), interface: en0
[  +77 ms] 	Duration: 120.288s, DNS @0.000s took 0.002s, TCP @0.004s took 0.016s, TLS took 0.077s
[        ] 	bytes in/out: 3877/822, packets in/out: 10/9, rtt: 0.014s, retransmitted packets: 1, out-of-order packets: 0
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455901-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.002s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] resolver:receive_dns
[        ] [DEVICE LOG] 2018-09-26 18:38:04.455975-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.003s [C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443 socket-flow] path:start
[        ] [DEVICE LOG] 2018-09-26 18:38:04.456034-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.003s [C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443 socket-flow] path:satisfied
[        ] [DEVICE LOG] 2018-09-26 18:38:04.456088-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.004s [C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443 socket-flow] flow:start_connect
[        ] [DEVICE LOG] 2018-09-26 18:38:04.456130-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.020s [C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443 socket-flow] flow:finish_transport
[        ] [DEVICE LOG] 2018-09-26 18:38:04.456335-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.020s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] flow:finish_transport
[        ] [DEVICE LOG] 2018-09-26 18:38:04.456585-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.097s [C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443 socket-flow] flow:finish_connect
[        ] [DEVICE LOG] 2018-09-26 18:38:04.456696-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.098s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] flow:finish_connect
[        ] [DEVICE LOG] 2018-09-26 18:38:04.457003-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.098s [C2.1 4DC7E5D4-BB20-4406-A917-760BFC71B54E <IP_ADDRESS>:51326<-><IP_ADDRESS>:443 socket-flow] flow:changed_viability
[        ] [DEVICE LOG] 2018-09-26 18:38:04.457550-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.098s [C2 77E111FD-A52B-46E7-843F-F632756CCA69 app-measurement.com:443 resolver] flow:changed_viability
[        ] [DEVICE LOG] 2018-09-26 18:38:04.457948-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 120.288s [C2] path:cancel
[        ] [DEVICE LOG] 2018-09-26 18:38:04.460335-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_disconnected [C2.1 <IP_ADDRESS>:443 cancelled socket-flow (null)] Output protocol disconnected
[        ] [DEVICE LOG] 2018-09-26 18:38:04.460634-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C2] reporting state cancelled
[        ] [DEVICE LOG] 2018-09-26 18:38:04.460834-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Destroyed [2:0x600003f6c6c0]
[        ] [DEVICE LOG] 2018-09-26 18:38:04.461043-0700  localhost Runner[11092]: (libboringssl.dylib) [com.apple.network.boringssl:BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C2.1:2][0x7fe9a0103520] get output frames failed, state 8196
[        ] [DEVICE LOG] 2018-09-26 18:38:04.461264-0700  localhost Runner[11092]: (libboringssl.dylib) [com.apple.network.boringssl:BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C2.1:2][0x7fe9a0103520] get output frames failed, state 8196
[        ] [DEVICE LOG] 2018-09-26 18:38:04.462076-0700  localhost Runner[11092]: (CFNetwork) TIC Read Status [2:0x0]: 1:57
[        ] [DEVICE LOG] 2018-09-26 18:38:04.462163-0700  localhost Runner[11092]: (CFNetwork) TIC Read Status [2:0x0]: 1:57
[+105241 ms] [DEVICE LOG] 2018-09-26 18:39:49.782819-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:Coalescing] success removing entry for host play.googleapis.com config 0x600000a63500
[        ] [DEVICE LOG] 2018-09-26 18:39:49.782916-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Cancel [1:0x600003f79d40]
[        ] [DEVICE LOG] 2018-09-26 18:39:49.782989-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C1 play.googleapis.com:443 tcp, url hash: 253002a7, tls] cancel
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783134-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C1 play.googleapis.com:443 tcp, url hash: 253002a7, tls] cancelled
[        ] [DEVICE LOG] 	[C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443]
[        ] [DEVICE LOG] 	Connected Path: satisfied (Path is satisfied), interface: en0
[        ] [DEVICE LOG] 	Duration: 240.270s, DNS @0.004s took 0.039s, TCP @0.046s took 0.015s, TLS took 0.206s
[        ] [DEVICE LOG] 	bytes in/out: 3592/1080, packets in/out: 9/10, rtt: 0.020s, retransmitted packets: 1, out-of-order packets: 0
[        ] 	[C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443]
[        ] 	Connected Path: satisfied (Path is satisfied), interface: en0
[        ] 	Duration: 240.270s, DNS @0.004s took 0.039s, TCP @0.046s took 0.015s, TLS took 0.206s
[        ] 	bytes in/out: 3592/1080, packets in/out: 9/10, rtt: 0.020s, retransmitted packets: 1, out-of-order packets: 0
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783194-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] path:start
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783246-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] path:satisfied
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783293-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.004s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] resolver:start_dns
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783334-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.043s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] resolver:receive_dns
[ +121 ms] [DEVICE LOG] 2018-09-26 18:39:49.783382-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.043s [C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443 socket-flow] path:start
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783421-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.044s [C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443 socket-flow] path:satisfied
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783538-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.046s [C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443 socket-flow] flow:start_connect
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783714-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.061s [C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443 socket-flow] flow:finish_transport
[        ] [DEVICE LOG] 2018-09-26 18:39:49.783978-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.062s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] flow:finish_transport
[        ] [DEVICE LOG] 2018-09-26 18:39:49.784194-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.267s [C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443 socket-flow] flow:finish_connect
[        ] [DEVICE LOG] 2018-09-26 18:39:49.784378-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.267s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] flow:finish_connect
[        ] [DEVICE LOG] 2018-09-26 18:39:49.784619-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.267s [C1.1 E2900069-82E3-4130-9564-EF51055C1BC6 <IP_ADDRESS>:51315<-><IP_ADDRESS>:443 socket-flow] flow:changed_viability
[        ] [DEVICE LOG] 2018-09-26 18:39:49.784875-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.267s [C1 EA67C919-D246-4597-B02A-702D5391410E play.googleapis.com:443 resolver] flow:changed_viability
[        ] [DEVICE LOG] 2018-09-26 18:39:49.785057-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 240.270s [C1] path:cancel
[        ] [DEVICE LOG] 2018-09-26 18:39:49.786530-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_disconnected [C1.1 <IP_ADDRESS>:443 cancelled socket-flow (null)] Output protocol disconnected
[        ] [DEVICE LOG] 2018-09-26 18:39:49.788573-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C1] reporting state cancelled
[        ] [DEVICE LOG] 2018-09-26 18:39:49.788664-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Destroyed [1:0x600003f79d40]
[        ] [DEVICE LOG] 2018-09-26 18:39:49.788743-0700  localhost Runner[11092]: (libboringssl.dylib) [com.apple.network.boringssl:BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C1.1:2][0x7fe9a000d440] get output frames failed, state 8196
[        ] [DEVICE LOG] 2018-09-26 18:39:49.788862-0700  localhost Runner[11092]: (libboringssl.dylib) [com.apple.network.boringssl:BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C1.1:2][0x7fe9a000d440] get output frames failed, state 8196
[        ] [DEVICE LOG] 2018-09-26 18:39:49.789140-0700  localhost Runner[11092]: (CFNetwork) TIC Read Status [1:0x0]: 1:57
[        ] [DEVICE LOG] 2018-09-26 18:39:49.789239-0700  localhost Runner[11092]: (CFNetwork) TIC Read Status [1:0x0]: 1:57
[+14547 ms] [DEVICE LOG] 2018-09-26 18:40:04.455665-0700  localhost Runner[11092]: (CFNetwork) [com.apple.CFNetwork:Coalescing] success removing entry for host app-measurement.com config 0x600000b9bec0
[        ] [DEVICE LOG] 2018-09-26 18:40:04.455796-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Cancel [3:0x600003f64a80]
[        ] [DEVICE LOG] 2018-09-26 18:40:04.455898-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C3 app-measurement.com:443 tcp, url hash: 414bfca9, tls] cancel
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456090-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] [C3 app-measurement.com:443 tcp, url hash: 414bfca9, tls] cancelled
[        ] [DEVICE LOG] 	[C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443]
[        ] [DEVICE LOG] 	Connected Path: satisfied (Path is satisfied), interface: en0
[        ] [DEVICE LOG] 	Duration: 240.089s, DNS @0.000s took 0.002s, TCP @0.004s took 0.015s, TLS took 0.069s
[        ] [DEVICE LOG] 	bytes in/out: 3589/1253, packets in/out: 9/10, rtt: 0.019s, retransmitted packets: 1, out-of-order packets: 0
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456176-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] path:start
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456264-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] path:satisfied
[        ] 	[C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443]
[        ] 	Connected Path: satisfied (Path is satisfied), interface: en0
[        ] 	Duration: 240.089s, DNS @0.000s took 0.002s, TCP @0.004s took 0.015s, TLS took 0.069s
[        ] 	bytes in/out: 3589/1253, packets in/out: 9/10, rtt: 0.019s, retransmitted packets: 1, out-of-order packets: 0
[  +69 ms] [DEVICE LOG] 2018-09-26 18:40:04.456316-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.000s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] resolver:start_dns
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456368-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.002s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] resolver:receive_dns
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456433-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.003s [C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443 socket-flow] path:start
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456480-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.003s [C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443 socket-flow] path:satisfied
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456686-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.004s [C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443 socket-flow] flow:start_connect
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456796-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.019s [C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443 socket-flow] flow:finish_transport
[        ] [DEVICE LOG] 2018-09-26 18:40:04.456981-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.019s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] flow:finish_transport
[        ] [DEVICE LOG] 2018-09-26 18:40:04.457179-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.088s [C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443 socket-flow] flow:finish_connect
[        ] [DEVICE LOG] 2018-09-26 18:40:04.457350-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.088s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] flow:finish_connect
[        ] [DEVICE LOG] 2018-09-26 18:40:04.457614-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.088s [C3.1 421D4355-B30B-49AC-8D7C-19C8BAE566E3 <IP_ADDRESS>:51327<-><IP_ADDRESS>:443 socket-flow] flow:changed_viability
[        ] [DEVICE LOG] 2018-09-26 18:40:04.457806-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 0.089s [C3 672FE3E8-DE51-414D-A93A-9B2966E7AF7B app-measurement.com:443 resolver] flow:changed_viability
[        ] [DEVICE LOG] 2018-09-26 18:40:04.457996-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] 240.089s [C3] path:cancel
[        ] [DEVICE LOG] 2018-09-26 18:40:04.459438-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_endpoint_flow_protocol_disconnected [C3.1 <IP_ADDRESS>:443 cancelled socket-flow (null)] Output protocol disconnected
[        ] [DEVICE LOG] 2018-09-26 18:40:04.459632-0700  localhost Runner[11092]: (libnetwork.dylib) [com.apple.network:] nw_connection_report_state_with_handler_locked [C3] reporting state cancelled
[        ] [DEVICE LOG] 2018-09-26 18:40:04.459787-0700  localhost Runner[11092]: (CFNetwork) TIC TCP Conn Destroyed [3:0x600003f64a80]
[        ] [DEVICE LOG] 2018-09-26 18:40:04.459918-0700  localhost Runner[11092]: (libboringssl.dylib) [com.apple.network.boringssl:BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C3.1:2][0x7fe9a003aba0] get output frames failed, state 8196
[        ] [DEVICE LOG] 2018-09-26 18:40:04.460082-0700  localhost Runner[11092]: (libboringssl.dylib) [com.apple.network.boringssl:BoringSSL] nw_protocol_boringssl_get_output_frames(1301) [C3.1:2][0x7fe9a003aba0] get output frames failed, state 8196
[        ] [DEVICE LOG] 2018-09-26 18:40:04.460428-0700  localhost Runner[11092]: (CFNetwork) TIC Read Status [3:0x0]: 1:57

related to https://github.com/flutter/flutter/issues/16560 ?

has similar output to https://github.com/flutter/flutter/issues/17500

Whatever is happening in flutter, dart is triggered by the following
if (document[bottlePriceKey] != null && double.tryParse(document[bottlePriceKey]) != null) {
      return double.tryParse(document[bottlePriceKey]);
    }

This looks like a problem with custom code, not framework code.
Can you please provide a minimal reproduction?

Please add the output of flutter doctor -v.

emulator

flutter doctor -v
[✓] Flutter (Channel beta, v0.8.2, on Mac OS X 10.13.6 17G65, locale en-US)
    • Flutter version 0.8.2 at /Users/fangadmin/flutter
    • Framework revision 5ab9e70727 (3 weeks ago), 2018-09-07 12:33:05 -0700
    • Engine revision 58a1894a1c
    • Dart version 2.1.0-dev.3.1.flutter-760a9690c2

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.2)
    • Android SDK at /Users/fangadmin/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 10.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.0, Build version 10A255
    • ios-deploy 2.0.0
    • CocoaPods version 1.5.3

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 28.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] VS Code (version 1.27.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 2.18.0

[✓] Connected devices (1 available)
    • Android SDK built for x86 • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)

• No issues found!

Could you try creating a new emulator (AVD) or resetting the one you're using?

@zoechi Yes, the issue is persistent.

After creating new Pixel 2 emulator (also present when reseting ios simulator).
flutter run
Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider enabling software rendering with "--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...                                       1.2s
Resolving dependencies...                                    1.6s
Running 'gradlew assembleDebug'...
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)
13.0s
Built build/app/outputs/apk/debug/app-debug.apk.
D/EGL_emulation( 4280): eglMakeCurrent: 0xe1e05540: ver 3 0 (tinfo 0xe1e03da0)
Syncing files to device Android SDK built for x86...
W/Firestore( 4280): (0.6.6-dev) [Firestore]: The behavior for java.util.Date objects stored in Firestore is going to change AND YOUR APP MAY BREAK.
W/Firestore( 4280): To hide this warning and ensure your app does not break, you need to add the following code to your app before calling any other Cloud Firestore methods:
W/Firestore( 4280):
W/Firestore( 4280): FirebaseFirestore firestore = FirebaseFirestore.getInstance();
W/Firestore( 4280): FirebaseFirestoreSettings settings = new FirebaseFirestoreSettings.Builder()
W/Firestore( 4280):     .setTimestampsInSnapshotsEnabled(true)
W/Firestore( 4280):     .build();
W/Firestore( 4280): firestore.setFirestoreSettings(settings);
W/Firestore( 4280):
W/Firestore( 4280): With this change, timestamps stored in Cloud Firestore will be read back as com.google.firebase.Timestamp objects instead of as system java.util.Date objects. So you will also need to update code expecting a java.util.Date to instead expect a Timestamp. For example:
W/Firestore( 4280):
W/Firestore( 4280): // Old:
W/Firestore( 4280): java.util.Date date = snapshot.getDate("created_at");
W/Firestore( 4280): // New:
W/Firestore( 4280): Timestamp timestamp = snapshot.getTimestamp("created_at");
W/Firestore( 4280): java.util.Date date = timestamp.toDate();
W/Firestore( 4280):
W/Firestore( 4280): Please audit all existing usages of java.util.Date when you enable the new behavior. In a future release, the behavior will be changed to the new behavior, so if you do not follow these steps, YOUR APP MAY BREAK.
I/pp88Barrels.ap( 4280): The ClassLoaderContext is a special shared library.
I/pp88Barrels.ap( 4280): The ClassLoaderContext is a special shared library.
I/pp88Barrels.ap( 4280): The ClassLoaderContext is a special shared library.
I/pp88Barrels.ap( 4280): The ClassLoaderContext is a special shared library.
W/linker  ( 4280): Warning: "/system/priv-app/PrebuiltGmsCore/PrebuiltGmsCore.apk!/lib/x86/libconscrypt_gmscore_jni.so" unused DT entry: DT_RPATH (type 0xf arg 0x119) (ignoring)
V/NativeCrypto( 4280): Registering com/google/android/gms/org/conscrypt/NativeCrypto's 283 native methods...
W/pp88Barrels.ap( 4280): Accessing hidden method Ljava/security/spec/ECParameterSpec;->getCurveName()Ljava/lang/String; (light greylist, reflection)
D/NetworkSecurityConfig( 4280): No Network Security Config specified, using platform default
W/pp88Barrels.ap( 4280): Accessing hidden field Ljavax/net/ssl/SSLSocketFactory;->defaultSocketFactory:Ljavax/net/ssl/SSLSocketFactory; (light greylist, reflection)
W/pp88Barrels.ap( 4280): Accessing hidden field Ljavax/net/ssl/SSLServerSocketFactory;->defaultServerSocketFactory:Ljavax/net/ssl/SSLServerSocketFactory; (light greylist, reflection)
I/ProviderInstaller( 4280): Installed default security provider GmsCore_OpenSSL
W/pp88Barrels.ap( 4280): Accessing hidden field Ljava/nio/Buffer;->address:J (light greylist, reflection)
W/pp88Barrels.ap( 4280): Accessing hidden field Ljava/net/Socket;->impl:Ljava/net/SocketImpl; (light greylist, reflection)
W/pp88Barrels.ap( 4280): Accessing hidden method Ldalvik/system/CloseGuard;->get()Ldalvik/system/CloseGuard; (light greylist, linking)
W/pp88Barrels.ap( 4280): Accessing hidden method Ldalvik/system/CloseGuard;->open(Ljava/lang/String;)V (light greylist, linking)
W/pp88Barrels.ap( 4280): Accessing hidden method Ljava/net/InetAddress;->isNumeric(Ljava/lang/String;)Z (light greylist, reflection)
W/pp88Barrels.ap( 4280): Accessing hidden field Ljava/io/FileDescriptor;->descriptor:I (light greylist, JNI)
W/pp88Barrels.ap( 4280): Accessing hidden method Ljava/security/spec/ECParameterSpec;->setCurveName(Ljava/lang/String;)V (light greylist, reflection)
W/pp88Barrels.ap( 4280): Accessing hidden method Ldalvik/system/BlockGuard;->getThreadPolicy()Ldalvik/system/BlockGuard$Policy; (light greylist, linking)
W/pp88Barrels.ap( 4280): Accessing hidden method Ldalvik/system/BlockGuard$Policy;->onNetwork()V (light greylist, linking)
W/pp88Barrels.ap( 4280): Accessing hidden method Ldalvik/system/BlockGuard;->getThreadPolicy()Ldalvik/system/BlockGuard$Policy; (light greylist, linking)
I/flutter ( 4280): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter ( 4280): The following assertion was thrown during performLayout():
I/flutter ( 4280): type 'double' is not a subtype of type 'String'
I/flutter ( 4280):
I/flutter ( 4280): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter ( 4280): more information in this error message to help you determine and fix the underlying cause.
I/flutter ( 4280): In either case, please report this assertion by filing a bug on GitHub:
I/flutter ( 4280):   https://github.com/flutter/flutter/issues/new
I/flutter ( 4280):
I/flutter ( 4280): When the exception was thrown, this was the stack:
I/flutter ( 4280): #0      WhiskyValue.tastingPriceOz (package:app_88barrels_flutter/whisky_value.dart:41:69)
I/flutter ( 4280): #1      whiskyAttributesRow (package:app_88barrels_flutter/screens/whisky_list.dart:113:43)
I/flutter ( 4280): #2      buildWhiskyList.<anonymous closure> (package:app_88barrels_flutter/screens/whisky_list.dart:53:21)
I/flutter ( 4280): #3      SliverChildBuilderDelegate.build (package:flutter/src/widgets/sliver.dart:258:20)
I/flutter ( 4280): #4      SliverMultiBoxAdaptorElement._build.<anonymous closure> (package:flutter/src/widgets/sliver.dart:783:67)
I/flutter ( 4280): #5      _HashMap.putIfAbsent (dart:collection/runtime/libcollection_patch.dart:143:29)
I/flutter ( 4280): #6      SliverMultiBoxAdaptorElement._build (package:flutter/src/widgets/sliver.dart:783:26)
I/flutter ( 4280): #7      SliverMultiBoxAdaptorElement.createChild.<anonymous closure> (package:flutter/src/widgets/sliver.dart:796:55)
I/flutter ( 4280): #8      BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2235:19)
I/flutter ( 4280): #9      SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:789:11)
I/flutter ( 4280): #10     RenderSliverMultiBoxAdaptor._createOrObtainChild.<anonymous closure> (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:254:23)
I/flutter ( 4280): #11     RenderObject.invokeLayoutCallback.<anonymous closure> (package:flutter/src/rendering/object.dart:1727:58)
I/flutter ( 4280): #12     PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:796:15)
I/flutter ( 4280): #13     RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:1727:13)
I/flutter ( 4280): #14     RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:243:5)
I/flutter ( 4280): #15     RenderSliverMultiBoxAdaptor.addInitialChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:321:5)
I/flutter ( 4280): #16     RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:78:12)
I/flutter ( 4280): #17     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #18     RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:182:11)
I/flutter ( 4280): #19     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #20     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:405:13)
I/flutter ( 4280): #21     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1320:12)
I/flutter ( 4280): #22     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1238:20)
I/flutter ( 4280): #23     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #24     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #25     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #26     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #27     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #28     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #29     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #30     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #31     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #32     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #33     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #34     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #35     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #36     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #37     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #38     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #39     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #40     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #41     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #42     RenderSliverFixedExtentBoxAdaptor.performLayout (package:flutter/src/rendering/sliver_fixed_extent_list.dart:199:18)
I/flutter ( 4280): #43     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #44     RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:405:13)
I/flutter ( 4280): #45     RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1320:12)
I/flutter ( 4280): #46     RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1238:20)
I/flutter ( 4280): #47     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #48     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #49     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #50     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #51     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #52     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #53     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #54     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #55     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #56     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #57     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #58     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #59     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #60     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #61     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #62     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #63     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #64     MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:141:11)
I/flutter ( 4280): #65     _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:338:7)
I/flutter ( 4280): #66     MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:211:7)
I/flutter ( 4280): #67     RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:355:14)
I/flutter ( 4280): #68     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #69     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #70     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #71     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #72     _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1192:11)
I/flutter ( 4280): #73     RenderObject.layout (package:flutter/src/rendering/object.dart:1631:7)
I/flutter ( 4280): #74     _RenderProxyBox&RenderBox&RenderObjectWithChildMixin&RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:108:13)
I/flutter ( 4280): #75     RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1506:7)
I/flutter ( 4280): #76     PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:765:18)
I/flutter ( 4280): #77     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:270:19)
I/flutter ( 4280): #78     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:654:13)
I/flutter ( 4280): #79     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:208:5)
I/flutter ( 4280): #80     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:990:15)
I/flutter ( 4280): #81     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:930:9)
I/flutter ( 4280): #82     _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:842:5)
I/flutter ( 4280): #83     _invoke (dart:ui/hooks.dart:128:13)
I/flutter ( 4280): #84     _drawFrame (dart:ui/hooks.dart:117:3)
I/flutter ( 4280):
I/flutter ( 4280): The following RenderObject was being processed when the exception was fired:
I/flutter ( 4280):   RenderSliverList#ae17f relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT
I/flutter ( 4280):   creator: SliverList ← MediaQuery ← SliverPadding ← Viewport ← _ScrollableScope ←
I/flutter ( 4280):   IgnorePointer-[GlobalKey#ab9f4] ← Semantics ← Listener ← _GestureSemantics ←
I/flutter ( 4280):   RawGestureDetector-[LabeledGlobalKey<RawGestureDetectorState>#0a886] ←
I/flutter ( 4280):   _ScrollSemantics-[GlobalKey#87e91] ← RepaintBoundary ← ⋯
I/flutter ( 4280):   parentData: paintOffset=Offset(0.0, 0.0) (can use size)
I/flutter ( 4280):   constraints: SliverConstraints(AxisDirection.down, GrowthDirection.forward, ScrollDirection.idle,
I/flutter ( 4280):   scrollOffset: 0.0, remainingPaintExtent: 555.4, crossAxisExtent: 411.4, crossAxisDirection:
I/flutter ( 4280):   AxisDirection.right, viewportMainAxisExtent: 555.4, remainingCacheExtent: 805.4 cacheOrigin: 0.0 )
I/flutter ( 4280):   geometry: null
I/flutter ( 4280):   no children current live
I/flutter ( 4280): This RenderObject has no descendants.
I/flutter ( 4280): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter ( 4280): Another exception was thrown: NoSuchMethodError: The getter 'scrollOffsetCorrection' was called on null.
I/flutter ( 4280): Another exception was thrown: NoSuchMethodError: The method 'debugAssertIsValid' was called on null.
I/flutter ( 4280): Another exception was thrown: NoSuchMethodError: The getter 'visible' was called on null.
D/        ( 4280): HostConnection::get() New Host Connection established 0xc8d0dc40, tid 4306
D/EGL_emulation( 4280): eglMakeCurrent: 0xe3ba66c0: ver 3 0 (tinfo 0xe1e03bf0)
 2.7s

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What's the code at and around I/flutter ( 4280): #0      WhiskyValue.tastingPriceOz (package:app_88barrels_flutter/whisky_value.dart:41:69) ?

The code cited above

Whatever

is happening in flutter, dart can triggered by the following
if (document[bottlePriceKey] != null && double.tryParse(document[bottlePriceKey]) != null) {
return double.tryParse(document[bottlePriceKey]);
}

Right, but I can't debug or analyze anything when I don't know what values cause the issue

Can you add some debug prints that output the values before the error and allow us to understand what's going on?

Where the StreamBuilder is being used is at a higher level in the UI
class WhiskyAppState extends State<WhiskyApp> {
  final appTitle = "88Barrels";

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: appTitle,
      theme: AppTheme.theme,
      routes: {
        AppRoutes.home: (context) {

          return StreamBuilder<QuerySnapshot>(
            stream: FirestoreDataSource().whiskiesSnapshots(),
            builder: (context, snapshot) {
              if (snapshot.hasError) {
                return new Text('Error: ${snapshot.error}');
              } else if (!snapshot.hasData) {
                return new Text('Loading...');
              } else {
                List<WhiskyValue> whiskies = snapshot.data.documents.map((document) {
                  return WhiskyValue(document: document);
                }).toList();
                return HomeScreen(
                  whiskies: whiskies,
                  // appState: appState,
                );
              }
            }
          );
        },
      },
    );
  }
}

What code line is this line 45:

WhiskyValue.tastingPriceOz (package:app_88barrels_flutter/whisky_value.dart:45:69)

ln 45
if (document[bottlePriceKey] != null && double.tryParse(document[bottlePriceKey]) != null) {

The whole whisky_value.dart
import 'package:cloud_firestore/cloud_firestore.dart';

class WhiskyValue {
  final DocumentSnapshot document;

  final bottlePriceKey = 'bottlePrice';
  final bottleQuantityKey = 'bottleQuantity';

  WhiskyValue({this.document});

  String country() {
    return document['country'] ?? '';
  }

  String shortName() {
    return document['shortName'] ?? '';
  }

  String tastingNotes() {
    return document['tastingNotes'] ?? '';
  }

  int barPrice() {
    return document['barPrice'] ?? -1;
  }

  String barLink() {
    return document['barLink'] ?? '';
  }

  int barSavingsOz() {
    return document['barPrice'] ?? -1;
  }

  final double shipping = 10.0;
  final int millilitersPerOz = 30;
  final double housePourRate = 0.80;
  final double bottlePricePlusTax = 1.085;

  String tastingPriceOz() {
    print("ftest: debug log");
    print("before: document kvo parsing -----------------");
    print(document[bottlePriceKey]);

    if (document[bottlePriceKey] != null && double.tryParse(document[bottlePriceKey]) != null) {
      return double.tryParse(document[bottlePriceKey]).toString();
    }

    print("after: document kvo parsing -----------------");
    print(double.tryParse(document[bottlePriceKey]).toString());

    return "100.0";
  }

  int distillerReview() {
    return document['distillerReview'] ?? -1;
  }

  String distillerLink() {
    return document['distillerLink'] ?? '';
  }

  int wineEnthusiastReview() {
    return document['wineEnthusiastReview'] ?? -1;
  }

  String wineEnthusiastLink() {
    return document['wineEnthusiastLink'] ?? '';
  }
}

You get the error when document[bottlePriceKey] is a double already and you try it to convert to a double. double.tryParse(...) expects a string

let me try returning document value directly without any parsing logic...

I am noticing some change in the output of the error. I believe this may in fact be the cause of it. I want to close this for now since flutter has so many open errors.
I will reopen if I suspect there may be a framework error.
Thanks @zoechi. I will follow-up if changing the model kvo access resolves this. Thanks alot and appreciate the valuable time.

If the value is from JSON, then there is probably data where the value is not in quotes. (249.99 vs "249.99")