Thanks, but there is another error relates to snaps please see attachment ,should I continue and don't bother with this error
** Attachment added: "snap- error" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1887544/+attachment/5397349/+files/Screenshot%20from%202020-07-31%2010-11-05.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1887544 Title: can not upgrade from 18.04 to 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1887544/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
