Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in E:\xampp\htdocs\vendor\symfony\http-kernel\EventListener\DebugHandlersListener.php:31 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\symfony\http-kernel\EventListener\DebugHandlersListener.php on line 31