Public bug reported:
(appstreamcli:5810): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed (appstreamcli:5810): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed (appstreamcli:5810): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed (appstreamcli:5810): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed (appstreamcli:5810): GLib-CRITICAL **: g_strchug: assertion 'string != NULL' failed (appstreamcli:5810): GLib-CRITICAL **: g_strchomp: assertion 'string != NULL' failed AppStream cache update completed, but some metadata was ignored due to errors. Checking package manager Reading package lists... Done Building dependency tree Reading state information... Done Calculating the changes Calculating the changes Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade. This was likely caused by: * Unofficial software packages not provided by Ubuntu Please use the tool 'ppa-purge' from the ppa-purge package to remove software from a Launchpad PPA and try the upgrade again. If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'. Restoring original system state ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.30 ProcVersionSignature: Ubuntu 4.4.0-179.209-generic 4.4.219 Uname: Linux 4.4.0-179-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.23 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Sat May 9 02:13:55 2020 InstallationDate: Installed on 2016-06-01 (1437 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to xenial on 2020-05-09 (0 days ago) mtime.conffile..etc.update-manager.release-upgrades: 2020-05-09T01:46:38.093536 ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade package-from-proposed third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1877691 Title: I am trying to update my old ubuntu to the latest version To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1877691/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs