Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in /home/mobiledeit/www_gesmat/vendor/symfony-cmf/routing/src/Event/RouterGenerateEvent.php:27 Stack trace: #0 {main} thrown in /home/mobiledeit/www_gesmat/vendor/symfony-cmf/routing/src/Event/RouterGenerateEvent.php on line 27