Public bug reported: I got this error when trying to update the package update notifier.
ProblemType: Package DistroRelease: Ubuntu 16.04 Package: update-notifier-common 3.168.10 ProcVersionSignature: Ubuntu 4.15.0-66.75~16.04.1-generic 4.15.18 Uname: Linux 4.15.0-66-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.21 Architecture: amd64 Date: Wed Feb 26 11:27:46 2020 DpkgHistoryLog: Start-Date: 2020-02-26 11:27:28 Commandline: apt-get install aptitude Requested-By: devugees (1000) Install: aptitude-common:amd64 (0.7.4-2ubuntu2, automatic), libcwidget3v5:amd64 (0.5.17-4ubuntu2, automatic), aptitude:amd64 (0.7.4-2ubuntu2) ErrorMessage: subprocess installed post-installation script returned error exit status 1 InstallationDate: Installed on 2018-03-09 (718 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) PackageArchitecture: all RelatedPackageVersions: dpkg 1.18.4ubuntu1.6 apt 1.2.32 SourcePackage: update-notifier Title: package update-notifier-common 3.168.10 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apt.apt.conf.d.10periodic: APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Download-Upgradeable-Packages "1"; APT::Periodic::AutocleanInterval "0"; APT::Periodic::Unattended-Upgrade "0"; mtime.conffile..etc.apt.apt.conf.d.10periodic: 2019-02-08T01:53:45.023772 ** Affects: update-notifier (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package 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/1864830 Title: package update-notifier-common 3.168.10 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-notifier/+bug/1864830/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs