[Satellite6] Why is puppetmaster service not running?

Issue

• puppetmaster service is not running
• puppetmaster service failed to start.

[root@satellite ~]# service puppetmaster status
puppet dead but pid file exists

[root@satellite ~]# systemctl status puppetmaster
puppetmaster.service - Puppet master
   Loaded: loaded (/usr/lib/systemd/system/puppetmaster.service; disabled)
   Active: inactive (dead)