cannot start sahara services
I am trying to install sahara on openstack of Mitaka centos7. When I try to start sahara services as below：
$ sahara-venv/bin/sahara-api --config-file sahara-venv/etc/sahara.conf
the system report errors as below:
Traceback (most recent call last):
File "sahara-venv/bin/sahara-all", line 7, in <module>
from sahara.cli.sahara_all import main
File "/root/sahara-venv/lib/python2.7/site-packages/sahara/cli/sahara_all.py", line 43, in <module>
import sahara.main as server
File "/root/sahara-venv/lib/python2.7/site-packages/sahara/main.py", line 27, in <module>
from sahara import config
File "/root/sahara-venv/lib/python2.7/site-packages/sahara/config.py", line 27, in <module>
from sahara.topology import topology_helper
File "/root/sahara-venv/lib/python2.7/site-packages/sahara/topology/topology_helper.py", line 26, in <module>
from sahara.utils.openstack import nova
File "/root/sahara-venv/lib/python2.7/site-packages/sahara/utils/openstack/nova.py", line 22, in <module>
from sahara.utils.openstack import images
File "/root/sahara-venv/lib/python2.7/site-packages/sahara/utils/openstack/images.py", line 73, in <module>
class SaharaImageManager(images.ImageManager):
AttributeError: 'module' object has no attribute 'ImageManager'
I know little about Sahara, but this looks like a version mismatch. For example, one of the Python libraries used by Sahara could be incompatible with your Sahara version, or your Sahara version might be incompatible with Mitaka.