I need your help with installation of placement service on Ubuntu 20.04. I have followed the steps in:

I am facing the following issue when I try to verify the installation:
$ placement-status upgrade check
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/oslo_upgradecheck/upgradecheck.py", line 196, in run
    return conf.command.action_fn()
  File "/usr/lib/python3/dist-packages/oslo_upgradecheck/upgradecheck.py", line 104, in check
    result = func_name(self, **kwargs)
  File "/usr/lib/python3/dist-packages/oslo_upgradecheck/common_checks.py", line 41, in check_policy_json
    policy_path = conf.find_file(conf.oslo_policy.policy_file)
  File "/usr/lib/python3/dist-packages/oslo_config/cfg.py", line 2543, in find_file
    raise NotInitializedError()
oslo_config.cfg.NotInitializedError: call expression on parser has not been invoked

I did a bit of debugging and found that the policy file is: policy.json. I could not find any policy.json on my machine. I created an empty policy.json at: /etc/placement/policy.json (user and group = placement). That too did not work.

I have followed the steps in the install guide twice, deleting the placement database and other resources and recreating them. I continue to see the same issue.

Thank you for your time.