Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/ismailserin.helioho.st/felsefelik.xyz/vendor/symfony/http-kernel/Event/KernelEvent.php:23 Stack trace: #0 {main} thrown in /home/ismailserin.helioho.st/felsefelik.xyz/vendor/symfony/http-kernel/Event/KernelEvent.php on line 23