Bug can be closed... Turns out I forgot to reboot first after performing all the upgrades on the old Xenial installation. After reboot, the upgrade process to Bionic starts fine.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1788606 Title: Upgrade from Ubuntu 16.04 to 18.04 fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1788606/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
