Why Ansible Tower Setup Installer is Failing With Error 'Unable to restart service redis' ?

Issue

When upgrading to Ansible Tower >3.7 or running the Ansible Tower >3.7 installer, setup is failing with below errors.

Ansible Tower nodes using RHEL 7:

TASK [redis : start redis and configure to startup automatically] **************************************
fatal: [localhost]: FAILED! => {"changed": false, "msg": "Unable to restart service rh-redis5-redis: Job for rh-redis5-redis.service failed because the control process exited with error code. See \"systemctl status rh-redis5-redis.service\" and \"journalctl -xe\" for details.\n"}

Ansible Tower nodes using RHEL 8:

TASK [redis : start redis and configure to startup automatically] **************************************
fatal: [localhost]: FAILED! => {"changed": false, "msg": "Unable to restart service redis: Job for redis.service failed because the control process exited with error code.\nSee \"systemctl status redis.service\" and \"journalctl -xe\" for details.\n"}