I recreated this error by following the test case provided, I then installed python3-update-manager, update-manager and update-manager-core version 1:16.04.5 and no longer received the Traceback. Setting to verification-done.
I recreated this error by following the test case provided, I then installed python3- update- manager, update-manager and update-manager-core version 1:16.04.5 and no longer received the Traceback. Setting to verification-done.