On 9/12/24 20:52, sebensteg@cod.edu wrote:
Hello everyone,
We have been using Mailman3 for over a year and half. We upgraded from Ubuntu 22.04.5, where it was working fine, to Ubuntu 22.04.1. Since then, mailman3 won’t work. When we tried to start it immediately after the upgrade, we got this error:
024-09-12T23:08:04.322353+00:00 weather1 systemd[1]: Starting mailman3.service - GNU Mailing List Manager... 2024-09-12T23:08:04.935569+00:00 weather1 mailman[23628]: SystemError: type psycopg2.extensions.ReplicationConnection has the Py_TPFLAGS_HAVE_GC flag but has no traverse function
See https://github.com/psycopg/psycopg2/issues/1598
...
But yet, we have this installed:
venv mailman@weather1:~$ pip install psycopg2-binary Requirement already satisfied: psycopg2-binary in ./venv/lib/python3.12/site-packages (2.8.6)
Any advice on how to get this working again would be GREATLY appreciated!
Try
pip install --upgrade psycopg2-binary
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