Looks like a duplicate of Bug #1875523 and Bug #1875599. Problem seems to be with python-is-python2 / python-minimal:
2020-10-03 08:28:12,888 INFO installing python-is-python2 because python-minimal was installed 2020-10-03 08:28:12,889 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system) 2020-10-03 08:28:42,073 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.' -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898152 Title: upgrade fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1898152/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs