Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\security-http\Event\InteractiveLoginEvent.php:21 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\security-http\Event\InteractiveLoginEvent.php on line 21