Produits Entr'ouvert » Authentic 2

after #10691 authentic can be called but it fails like this if there's no appropriate user:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python2.7/dist-packages/django/views/decorators/csrf.py", line 57, in wrapped_view
    return view_func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/rest_framework/viewsets.py", line 87, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/rest_framework/views.py", line 466, in dispatch
    response = self.handle_exception(exc)
  File "/usr/lib/python2.7/dist-packages/rest_framework/views.py", line 463, in dispatch
    response = handler(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/rest_framework/mixins.py", line 67, in update
    instance = self.get_object()
  File "/usr/lib/python2.7/dist-packages/rest_framework/generics.py", line 84, in get_object
    queryset = self.filter_queryset(self.get_queryset())
  File "/usr/lib/python2.7/dist-packages/authentic2/api_views.py", line 358, in get_queryset
    return self.request.user.filter_by_perm(['custom_user.view_user'], User.objects.all())
AttributeError: 'AnonymousAuthenticServiceUser' object has no attribute 'filter_by_perm'