#1148663 mailman3-web: Mailman3 not working following distribution upgrade from Debian 12 to 13

Package:
mailman3-web
Source:
mailman3-web
Submitter:
Alain Williams
Date:
2026-09-23 15:09:02 UTC
Severity:
normal
#1148663#5
Date:
2026-09-21 18:08:34 UTC
From:
To:
mailman3 works after I patched /usr/lib/python3/dist-packages/robot_detection.py
It had escape sequences in strings that python did not like: \- \s \/ \. \; \/ \\

The bug that I am reporting is that the web interface does not work. When I go to
the web page it just says 'server error' 'An error occurred while processing your request.'

I see in: /var/log/mailman3/web/mailman-web.log

django.db.utils.OperationalError: (1054, "Unknown column 'socialaccount_socialapp.provider_id' in 'SELECT'")

So: were some new database table columns needed to be created when the
upgrade happened ?
#1148663#10
Date:
2026-09-23 14:30:30 UTC
From:
To:
Mailman guru Mark Sapiro <mark@msapiro.net> suggested:

****

django-admin migrate

where django-admin is the name of your Django admin command.

****

I tried that as user list. It failed, see below:

$ django-admin migrate
Traceback (most recent call last):
  File "/usr/bin/django-admin", line 8, in <module>
    sys.exit(execute_from_command_line())
             ~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3/dist-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
    utility.execute()
    ~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3/dist-packages/django/core/management/__init__.py", line 436, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/django/core/management/base.py", line 412, in run_from_argv
    self.execute(*args, **cmd_options)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/django/core/management/base.py", line 458, in execute
    output = self.handle(*args, **options)
  File "/usr/lib/python3/dist-packages/django/core/management/base.py", line 103, in wrapper
    saved_locale = translation.get_language()
  File "/usr/lib/python3/dist-packages/django/utils/translation/__init__.py", line 210, in get_language
    return _trans.get_language()
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/django/utils/translation/__init__.py", line 65, in __getattr__
    if settings.USE_I18N:
       ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/django/conf/__init__.py", line 102, in __getattr__
    self._setup(name)
    ~~~~~~~~~~~^^^^^^
  File "/usr/lib/python3/dist-packages/django/conf/__init__.py", line 82, in _setup
    raise ImproperlyConfigured(
    ...<4 lines>...
    )
django.core.exceptions.ImproperlyConfigured: Requested setting USE_I18N, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.
list@bf2024:~$