Error after manipulating karma-points

edit

I have changed the karma of an user (+ 9000) after that I get error messages via E-Mail every time the user makes some posts or changes on my website.

Traceback (most recent call last):

  File "/srv/site/node1/env/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)

  File "/srv/site/node1/askbot/views/users.py", line 1074, in user
    return user_view_func(request, profile_owner, context)

  File "/srv/site/node1/env/local/lib/python2.7/site-packages/django/utils/decorators.py", line 91, in _wrapped_view
    response = view_func(request, *args, **kwargs)

  File "/srv/site/node1/askbot/views/users.py", line 280, in user_moderate
    subject = subject

  File "/srv/site/node1/askbot/forms.py", line 645, in __init__
    raise ValueError('moderator or admin expected from "moderator"')

ValueError: moderator or admin expected from "moderator"

What does this error mean: ValueError: moderator or admin expected from "moderator" ?