Fatal error: Uncaught Error: Class 'Symfony\Component\EventDispatcher\Event' not found in /home/lafaamicps/www/symfony/vendor/knplabs/knp-components/src/Knp/Component/Pager/Event/BeforeEvent.php:11 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/knplabs/knp-components/src/Knp/Component/Pager/Event/BeforeEvent.php on line 11