manila installation failed

[Nataraj]

while installation of manila with cephfs (pacific) openstack-ansible (Victoria) manila deployment we are receiving following error

RUNNING HANDLER [os_manila : Copy new policy file into place] ************************************************************************************
fatal: [infra4_manila_container-5cb12fa5]: FAILED! => {"changed": false, "msg": "Source /etc/manila/policy.json-22.2.0 not found"}
fatal: [infra5_manila_container-329d2b1d]: FAILED! => {"changed": false, "msg": "Source /etc/manila/policy.json-22.2.0 not found"}
fatal: [infra6_manila_container-42882ee5]: FAILED! => {"changed": false, "msg": "Source /etc/manila/policy.json-22.2.0 not found"}

TASK [os_manila : Copy manila configs] ***********************************************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: AttributeError: 'str' object has no attribute 'items'
fatal: [infra4_manila_container-5cb12fa5]: FAILED! => {"msg": "Unexpected failure during module execution.", "stdout": ""}
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: AttributeError: 'str' object has no attribute 'items'
fatal: [infra5_manila_container-329d2b1d]: FAILED! => {"msg": "Unexpected failure during module execution.", "stdout": ""}
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: AttributeError: 'str' object has no attribute 'items'
fatal: [infra6_manila_container-42882ee5]: FAILED! => {"msg": "Unexpected failure during module execution.", "stdout": ""}

[Nataraj (natarajpatra)]

also the verbose mode shows

 File "/opt/ansible-runtime/lib/python3.6/site-packages/jinja2/filters.py", line 298, in do_dictsort
    return sorted(value.items(), key=sort_func, reverse=reverse)
AttributeError: 'str' object has no attribute 'items'
fatal: [infra6_manila_container-42882ee5]: FAILED! => {
    "msg": "Unexpected failure during module execution.",
    "stdout": ""