Fatal error: Uncaught Error: Class 'Symfony\Component\EventDispatcher\GenericEvent' not found in /home/optinadmin/rfl.optin.co.nz/concrete/src/Page/FeedEvent.php:8 Stack trace: #0 {main} thrown in /home/optinadmin/rfl.optin.co.nz/concrete/src/Page/FeedEvent.php on line 8