cloudkitty-cannot import name pattern
I am trying to setup cloudkitty with devstack(now master-pike)
the installation was successfull but in dashboard I get this error
Request Method: GET
Request URL: http://<ip-addr>/dashboard/
Django Version: 1.11.3
Exception Type: ImportError
Exception Value:
cannot import name patterns
Exception Location: /opt/stack/cloudkitty-dashboard/cloudkittydashboard/overrides.py in <module>, line 17
Python Executable: /usr/bin/python
Python Version: 2.7.12
Python Path:
['/opt/stack/horizon',
'/opt/stack/horizon',
'/opt/stack/keystone',
'/opt/stack/glance',
'/opt/stack/cinder',
'/opt/stack/neutron',
'/opt/stack/nova',
'/opt/stack/horizon',
'/opt/stack/tempest',
'/opt/stack/ceilometer',
'/opt/stack/cloudkitty',
'/opt/stack/python-cloudkittyclient',
'/opt/stack/cloudkitty-dashboard',
'/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: Sun, 6 Aug 2017 03:27:51 +0000
how to solve this issue??