Eric Abrahamsen <eric@ericabrahamsen.net> writes:

> I hit this trying to respool within an nnimap server, from INBOX to a
> different group. This is git gnus. `nnimap-request-accept-article' uses
> a form containing a call to `nnml-active-number', which doesn't exist.
> Respool query gave me the correct group, but actually respooling gave me
> the following (still with the non-existent "mail.misc" group!).

Sorry, not "doesn't exist", but "isn't loaded". Here's a patch that
autoloads nnml if necessary.