Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\Event\AuthenticationEvent' not found in C:\Apache24\htdocs\fixedasset\vendor\symfony\security-core\Event\AuthenticationSuccessEvent.php:14 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\fixedasset\vendor\symfony\security-core\Event\AuthenticationSuccessEvent.php on line 14