Getting "pkg_resources.DistributionNotFound: The 'ansible-core>=2.12.0' distribution was not found and is required by ansible-lint" on Red Hat Ansible Private Automation Hub

Issue

• Private Automation Hub Services are not starting on one cluster node.

• The Private Automation Hub is showing the following exception in /var/log/messages :

  Jul 14 09:10:56 automationhub gunicorn[57558]: [2023-07-14 09:10:56 +0000] [57566] [INFO] Worker exiting (pid: 57566)
  Jul 14 09:10:56 automationhub gunicorn[57558]: [2023-07-14 09:10:56 +0000] [57565] [ERROR] Exception in worker process
  ...
  Jul 14 09:10:56 automationhub gunicorn[57558]:  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 2469, in require
  Jul 14 09:10:56 automationhub gunicorn[57558]:    items = working_set.resolve(reqs, env, installer, extras=self.extras)
  Jul 14 09:10:56 automationhub gunicorn[57558]:  File "/usr/lib/python3.9/site-packages/pkg_resources/__init__.py", line 770, in resolve
  Jul 14 09:10:56 automationhub gunicorn[57558]:    raise DistributionNotFound(req, requirers)
  Jul 14 09:10:56 automationhub gunicorn[57558]: pkg_resources.DistributionNotFound: The 'ansible-core>=2.12.0' distribution was not found and is required by ansible-lint
  

• Getting below error while accessing the hub UI in the browser:

  502 Bad Gateway