How to Fix Failed to start httpd service unit is masked

AnsibleControl httpd AH00112 Warning DocumentRoot /var/www/html/silent_lan does not exist
AH00558 httpd Could not reliably determine the server s fully qualified domain name using

systemctl #failed to start unit is masked,
failed to start lsb: apache2 web server.
service httpd start failed,
#failed to restart postfix service unit postfix service is masked,
failed to restart sudo service unit sudo service is masked,
failed to start vmtoolsd service unit is masked,
unit httpd service has failed,

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#silentsolution

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