Hi maintainers,

Likely related to the recent outage and probably a known issue, but anyway I tried to subscribe to a mailing list and got an error page back:

""" Bug in Mailman version 2.1.15

We're sorry, we hit a bug!

Please inform the webmaster for this site of this problem. Printing of traceback and other system information has been explicitly inhibited, but the webmaster can find this information in the Mailman error logs. """

The mailing list that I was trying to subscribe to is https://mailman.common-lisp.net/listinfo/cl-unification-devel

Cheers, Fabricio