Comment 18 for bug 1999640

Hi, just passing by as we got hit by this (or something similar) and this might help others.

In our case is a model that was upgraded from pre-2.9, currently running 2.9.42 in both controller and client.
and the actual error from juju deploy was:

12:12:09 O: Resolving charm: filebeat
12:12:09 O: Executing changes:
12:12:09 O: - upload charm cs:filebeat-50 for series focal
12:12:09 O: - upgrade filebeat to use charm cs:filebeat-50 for series focal
12:12:09 O: ERROR cannot deploy bundle: missing base name or channel not valid (not valid)

In our case, the problem seems to be that the bundle was using `charm: filebeat` to refer to a local charm, changing that to the full path to the charm solved the problem