It may also be because of the "trusted=yes" lines in /etc/apt/sources.list.
** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Triaged ** Summary changed: - sudo do-release-upgrade - fails + upgrading from an end of life release failed in part because no distro template was available ** Changed in: ubuntu-release-upgrader (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875336 Title: upgrading from an end of life release failed in part because no distro template was available To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1875336/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs