Why Ansible Tower Restore Is Failing With 'permission denied' On The 'tower.db' file ?

Issue

When restoring a Ansible Tower backup, the installer fails with permission denied error on the tower.db file.

TASK [Perform a PostgreSQL restore (internal).] *********************************************************************************************
fatal: [localhost]: FAILED! => {"changed": true, "cmd": "psql --dbname='template1' < tower.db && psql --dbname='awx' < new_instance_topology.db", "delta": "0:00:00.009533", "end": "2020-07-01 03:59:27.812137", "msg": "non-zero return code", "rc": 1, "start": "2020-07-01 03:59:27.802604", "stderr": "/bin/sh: tower.db: Permission denied", "stderr_lines": ["/bin/sh: tower.db: Permission denied"], "stdout": "", "stdout_lines": []}