gistfile1.pytb

Traceback (most recent call last):
  File "./vis/wsgi.py", line 17, in <module>
    application = get_wsgi_application()
  File "/usr/local/lib/python2.7/dist-packages/django/core/wsgi.py", line 14, in get_wsgi_application
    django.setup()
  File "/usr/local/lib/python2.7/dist-packages/django/__init__.py", line 21, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/usr/local/lib/python2.7/dist-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "/usr/local/lib/python2.7/dist-packages/django/apps/config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "./vis/../vis/apps/wagtailextra/models.py", line 3, in <module>
    from wagtail.wagtailcore.models import Page, \
  File "/usr/local/lib/python2.7/dist-packages/wagtail/wagtailcore/models.py", line 268, in <module>
    class Page(six.with_metaclass(PageBase, MP_Node, ClusterableModel, index.Indexed)):
  File "/usr/lib/python2.7/dist-packages/six.py", line 617, in with_metaclass
    return meta("NewBase", bases, {})
  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 71, in __new__
    module = attrs.pop('__module__')
KeyError: u'__module__'