Unknown attribute "output" on APIResource object of type "<class 'horizon.api.nova.VNCConsole'>"

[Anthony Young]

Environment:

Request Method: GET
Request URL: http://192.168.2.10/nova/instances_and_volumes/instances/b1ee3d5d-5444-4d7f-83ee-141c9743cebd/detail

Django Version: 1.3
Python Version: 2.7.2
Installed Applications:
['dashboard',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django_nose',
 'horizon',
 'horizon.dashboards.nova',
 'horizon.dashboards.syspanel',
 'horizon.dashboards.settings']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'dashboard.middleware.DashboardLogUnhandledExceptionsMiddleware',
 'horizon.middleware.HorizonMiddleware',
 'django.middleware.doc.XViewMiddleware',
 'django.middleware.locale.LocaleMiddleware')

Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  111. response = callback(request, *callback_args, **callback_kwargs)
File "/opt/stack/horizon/horizon/horizon/decorators.py" in dec
  41. return view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/decorators.py" in _wrapped_view
  23. return view_func(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/horizon/decorators.py" in dec
  41. return view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in view
  47. return self.dispatch(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in dispatch
  68. return handler(request, *args, **kwargs)
File "/opt/stack/horizon/horizon/horizon/views/base.py" in get
  45. exceptions.handle(request)
File "/opt/stack/horizon/horizon/horizon/views/base.py" in get
  43. context = self.get_data(request, context, *args, **kwargs)
File "/opt/stack/horizon/horizon/horizon/dashboards/nova/instances_and_volumes/instances/views.py" in get_data
  121. 'instance "%s".') % instance_id)
File "/opt/stack/horizon/horizon/horizon/dashboards/nova/instances_and_volumes/instances/views.py" in get_data
  114. vnc_url = "%s&title=%s(%s)" % (console.output,
File "/opt/stack/horizon/horizon/horizon/api/base.py" in __getattr__
  79. raise AttributeError(msg)

Exception Type: AttributeError at /nova/instances_and_volumes/instances/b1ee3d5d-5444-4d7f-83ee-141c9743cebd/detail
Exception Value: Unknown attribute "output" on APIResource object of type "<class 'horizon.api.nova.VNCConsole'>"