Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in /home/gmcguire/public_html/concrete5/concrete/src/User/Group/LogSubscriber.php:19 Stack trace: #0 {main} thrown in /home/gmcguire/public_html/concrete5/concrete/src/User/Group/LogSubscriber.php on line 19