This error can also be seen in update-notifier's autopkgtest triggered by debconf 1.5.64
http://autopkgtest.ubuntu.com/packages/u/update-notifier/bionic/amd64 ** Also affects: debconf (Ubuntu) Importance: Undecided Status: New ** Changed in: debconf (Ubuntu) Status: New => Confirmed ** Changed in: debconf (Ubuntu) Importance: Undecided => High ** Changed in: update-notifier (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to debconf in Ubuntu. https://bugs.launchpad.net/bugs/1731334 Title: update-notifier-common upgrade :debconf.py not found Status in debconf package in Ubuntu: Confirmed Status in update-notifier package in Ubuntu: Confirmed Bug description: Today I did a fresh instalation of new branch development ubuntu beaver, intended to help with some tests... So, after the installation, I switched on cannonical partners and proposed repositoryes and I gave an apt upgrade and dist-upgrade and restarted the computer... After this I tried to install flashplugin-installer and I got the follow messages from apt process: Configuring update-notifier-common (3.186) ... Traceback (most recent call last): File "/usr/lib/update-notifier/package-data-downloader", line 26, in <module> import debconf ModuleNotFoundError: No module named 'debconf' dpkg: erro ao processar o pacote update-notifier-common (--configure): installed update-notifier-common package post-installation script subprocess returned error exit status 1 I had to remove the update-notifier-common and with it, update- notifier, ubuntu-desktop, the unconfigured flashplugin-installer and some two oher dependencies that I dont remember. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debconf/+bug/1731334/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp