I hit an error when I try to access dashboard:

[Fri Nov 15 03:14:35 2013] [error] Internal Server Error: /horizon/admin/ [Fri Nov 15 03:14:35 2013] [error] Traceback (most recent call last): [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 115, in get_response [Fri Nov 15 03:14:35 2013] [error] response = callback(request, callback_args, *callback_kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 38, in dec [Fri Nov 15 03:14:35 2013] [error] return view_func(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 86, in dec [Fri Nov 15 03:14:35 2013] [error] return view_func(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 54, in dec [Fri Nov 15 03:14:35 2013] [error] return view_func(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 38, in dec [Fri Nov 15 03:14:35 2013] [error] return view_func(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 86, in dec [Fri Nov 15 03:14:35 2013] [error] return view_func(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/django/views/generic/base.py", line 68, in view [Fri Nov 15 03:14:35 2013] [error] return self.dispatch(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/django/views/generic/base.py", line 86, in dispatch [Fri Nov 15 03:14:35 2013] [error] return handler(request, args, *kwargs) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 155, in get [Fri Nov 15 03:14:35 2013] [error] handled = self.construct_tables() [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 146, in construct_tables [Fri Nov 15 03:14:35 2013] [error] handled = self.handle_table(table) [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 118, in handle_table [Fri Nov 15 03:14:35 2013] [error] data = self._get_data_dict() [Fri Nov 15 03:14:35 2013] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 182, in _get_data_dict [Fri Nov 15 03:14:35 2013] [error] self._data = {self.table_class._meta.name: self.get_data()} [Fri Nov 15 03:14:35 2013] [error] File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/dashboards/admin/overview/views.py", line 59, in get_data [Fri Nov 15 03:14:35 2013] [error] data = super(GlobalOverview, self).get_data() [Fri Nov 15 03:14:35 2013] [error] File "/usr ... (more)