Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\symfony\psr-http-message-bridge\EventListener\PsrResponseListener.php:18 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\symfony\psr-http-message-bridge\EventListener\PsrResponseListener.php on line 18