404s seem to be returning 500 errors in Production.

Internal Server Error: /housing/apartment-2/5/
Traceback (most recent call last):
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/django/views/generic/base.py", line 71, in view
    return self.dispatch(request, *args, **kwargs)
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/braces/views/_access.py", line 64, in dispatch
    request, *args, **kwargs)
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/django/views/generic/base.py", line 89, in dispatch
    return handler(request, *args, **kwargs)
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/django/views/generic/detail.py", line 115, in get
    self.object = self.get_object()
  File "/srv/roomlist/roomlist/housing/views.py", line 90, in get_object
    building=building)
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/django/db/models/manager.py", line 127, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/srv/roomlist/.venv2/local/lib/python2.7/site-packages/django/db/models/query.py", line 334, in get
    self.model._meta.object_name
DoesNotExist: Floor matching query does not exist.