I had upgraded openstack grizzly to havana in ubuntu 12.04 server,but when I entered the flavors page I've got an internal server error.Here is the detail in the /var/log/apache/error.log:
[Mon Jun 16 03:45:49 2014] [error] Internal Server Error: /horizon/admin/flavors/
[Mon Jun 16 03:45:49 2014] [error] Traceback (most recent call last):
[Mon Jun 16 03:45:49 2014] [error] File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response
[Mon Jun 16 03:45:49 2014] [error] response = callback(request, *callback_args, **callback_kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 38, in dec
[Mon Jun 16 03:45:49 2014] [error] return view_func(request, *args, **kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 86, in dec
[Mon Jun 16 03:45:49 2014] [error] return view_func(request, *args, **kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 54, in dec
[Mon Jun 16 03:45:49 2014] [error] return view_func(request, *args, **kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 38, in dec
[Mon Jun 16 03:45:49 2014] [error] return view_func(request, *args, **kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py", line 48, in view
[Mon Jun 16 03:45:49 2014] [error] return self.dispatch(request, *args, **kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py", line 69, in dispatch
[Mon Jun 16 03:45:49 2014] [error] return handler(request, *args, **kwargs)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 155, in get
[Mon Jun 16 03:45:49 2014] [error] handled = self.construct_tables()
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 146, in construct_tables
[Mon Jun 16 03:45:49 2014] [error] handled = self.handle_table(table)
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 118, in handle_table
[Mon Jun 16 03:45:49 2014] [error] data = self._get_data_dict()
[Mon Jun 16 03:45:49 2014] [error] File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 182, in _get_data_dict
[Mon Jun 16 03:45:49 2014] [error] self._data = {self.table_class._meta.name: self.get_data()}
[Mon Jun 16 03:45:49 2014] [error] File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/dashboards/admin/flavors/views.py", line 51, in get_data
[Mon Jun 16 03:45:49 2014] [error] _('Unable to retrieve flavor list.'))
[Mon Jun 16 03:45:49 2014] [error] File "/usr/share/openstack-dashboard ...
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