[Mailman-Users] Error email

[Dan Jones]

Can anyone tell me what the following error message means?

From: root at corwin.riddlemaster.org (Cron Daemon)
To: list at corwin.riddlemaster.org
Subject: Cron <list at corwin> /usr/lib/mailman/cron/checkdbs

Traceback (most recent call last):
  File "/usr/lib/mailman/cron/checkdbs", line 174, in ?
    main()
  File "/usr/lib/mailman/cron/checkdbs", line 115, in main
    mlist.preferred_language)
  File "/var/lib/mailman/Mailman/Message.py", line 206, in __init__
    errors='replace')
TypeError: __init__() got an unexpected keyword argument 'errors'