[Bug 1928555] Re: Upgrade from 18.04 LTS fails

When I tried it, I got the following error: authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg' Authentication failed Authenticating the upgrade failed. There may be a problem with the

[Bug 1928555] [NEW] Upgrade from 18.04 LTS fails

Public bug reported: do-release-upgrade -m desktop fails with the following message: Could not determine the upgrade An unresolvable problem occurred while calculating the upgrade. If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core'