Received error message as shown in the attachment and same was there originally before changing sources.list file and trying to upgrade.And also note that I use the command to perform upgrade:-
sudo do-release-upgrade -d -f DistUpgradeViewGtk3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898009 Title: upgrader failes -Could not calculate the upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1898009/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
