bug mailman

[Fabricio Chalub]

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