Comment 13 for bug 1913204

Eventually this is because of the wrong repo that has been added to the deploy host:

E: The repository 'http://ppa.launchpad.net/chris-lea/munin-plugins/ubuntu focal Release' does not have a Release file.

. We don't install such repo and it's smth that was installed by you for this host. You should remove all non working repos from the host and ideally use clean system from the deploy host.