query: Unable to resolve key error while updating Ubuntu 16.04
positive_passages.docid: 6809
positive_passages.text: How do I fix the GPG error "NO_PUBKEY"?
negative_passages.docid: 149279
negative_passages.text: Why can not upgrade texlive2016 to texlive2017 on windows
negative_passages.docid: 44771
negative_passages.text: What to do with KEYEXPIRED 1555048520 on updating Google Chrome and Earth repositories?
negative_passages.docid: 116445
negative_passages.text: "Can't check signature: public key not found" while upgrading, why?
negative_passages.docid: 121983
negative_passages.text: gpgkeys: key C927EBE00F1B0520 not found on keyserver
negative_passages.docid: 98844
negative_passages.text: upgrade 14.04 with errors and shows red sign on top
negative_passages.docid: 145400
negative_passages.text: Error when trying sudo apt-get update - Python related?
negative_passages.docid: 155918
negative_passages.text: What information do I need to solve an APT dependency issue?
negative_passages.docid: 103929
negative_passages.text: sudo apt upgrade error 18.04 (Broken Packages)
negative_passages.docid: 135575
negative_passages.text: How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
negative_passages.docid: 36696
negative_passages.text: Unmet dependencies unable to fix
negative_passages.docid: 967
negative_passages.text: How can I avoid "please insert CD/DVD" error when updating Ubuntu?
negative_passages.docid: 1520
negative_passages.text: How to install software or upgrade from an old unsupported release?
negative_passages.docid: 13970
negative_passages.text: Why am I not getting the Ubuntu 18.04 upgrade?
negative_passages.docid: 53099
negative_passages.text: How to fix "-5 No address associated with hostname error" while updating?
negative_passages.docid: 149245
negative_passages.text: What to do about "the disk drive for /dev/mapper/cryptswap1 is not ready yet or not present"?
negative_passages.docid: 28000
negative_passages.text: "GPG error:The following signatures were invalid: KEYEXPIRED"