I removed some of the PPA's first, by purging them, and then went ahead with the upgrade to 18.04LTS using 'Software Updater'. Everything went very smoothly, with no hiccups, whatsoever!
Thanks! ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Invalid ** Changed in: ubuntu-release-upgrader (Ubuntu) Assignee: (unassigned) => fieryhydra (fieryhydra) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1791509 Title: upgrade from 16.04 LTS to 18.04 LTS aborted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1791509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs