You still have PPA's enabled in your sources. You need to purge packages from them (use ppa-purge command) before you can continue.
deb http://ppa.launchpad.net/webupd8team/java/ubuntu bionic main deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu bionic main deb http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic main deb-src http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic main deb https://download.docker.com/linux/ubuntu bionic main deb-src https://download.docker.com/linux/ubuntu bionic main deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main deb [arch=amd64] http://packages.microsoft.com/repos/vscode stable main -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1907547 Title: Error in upgrading to Ubuntu 20 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1907547/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
