query: Can't update my system due to GPG error Clearsigned file isn't valid, got 'NODATA'
positive_passages.docid: 24355
positive_passages.text: Got NODATA issue: 'NODATA' (does the network require authentication?)
negative_passages.docid: 40885
negative_passages.text: What should I do when I got the KEYEXPIRED error message after an apt-get update?
negative_passages.docid: 158683
negative_passages.text: apt-get update failed because certificate verification failed because handshake failed on nodesource
negative_passages.docid: 126437
negative_passages.text: pass and gpg: No public key
negative_passages.docid: 122274
negative_passages.text: Release file for http://archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease is not valid yet
negative_passages.docid: 98844
negative_passages.text: upgrade 14.04 with errors and shows red sign on top
negative_passages.docid: 112879
negative_passages.text: W: The repository 'http://download.fpcomplete.com/ubuntu yakkety Release' is not signed
negative_passages.docid: 92371
negative_passages.text: Why am i getting this Drush error after updating a site?
negative_passages.docid: 83924
negative_passages.text: error while trying to sudo apt-get update GPG, no sign repository
negative_passages.docid: 17596
negative_passages.text: Invalid signature for Kali Linux repositories : "The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository"
negative_passages.docid: 76883
negative_passages.text: How can I remove gpg key that I added using apt-key add -?
negative_passages.docid: 56150
negative_passages.text: Can't upgrade/update ubuntu 18.04 as apt/dpkg error is showing up
negative_passages.docid: 121983
negative_passages.text: gpgkeys: key C927EBE00F1B0520 not found on keyserver
negative_passages.docid: 24957
negative_passages.text: Node Package Manager got corrupted in some way, now it cannot be installed
negative_passages.docid: 130650
negative_passages.text: E: The repository 'http//archive.canonical.com precise Release' is not signed
negative_passages.docid: 4248
negative_passages.text: How to fix apt: Signature by key uses weak digest algorithm (SHA1)?
negative_passages.docid: 48418
negative_passages.text: W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: