TemplateSyntaxError at /admin/hypervisors/
'NoneType' object is not iterable
Request Method:	GET
Request URL:	http://54.149.118.212/admin/hypervisors/
Django Version:	1.6.10
Exception Type:	TemplateSyntaxError
Exception Value:
'NoneType' object is not iterable
Exception Location:	/opt/stack/horizon/openstack_dashboard/wsgi/../../horizon/tables/base.py in get_rows, line 1730
Python Executable:	/usr/bin/python
Python Version:	2.7.6
Python Path:
['/opt/stack/horizon/openstack_dashboard/wsgi/../..',
 '/opt/stack/keystone',
 '/opt/stack/glance',
 '/opt/stack/cinder',
 '/opt/stack/nova',
 '/opt/stack/horizon',
 '/opt/stack/heat',
 '/opt/stack/tempest',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/opt/stack/horizon/openstack_dashboard']
Server time:	Sat, 17 Jan 2015 02:49:32 +0000