I also ran into this exact issue attempting an upgrade from 18.04 to 20.04. Let me know if I can provide any additional detail.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1902767 Title: do-release-upgrade exits with "An unresolvable problem occurred while calculating the upgrade" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1902767/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
