Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in C:\SistemasPHP\observatorio4\vendor\symfony\http-kernel\EventListener\ExceptionListener.php:30 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony\http-kernel\EventListener\ExceptionListener.php on line 30