Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/technoon/public_html/dyenix/vendor/omines/datatables-bundle/src/Event/DataTableEvent.php:23 Stack trace: #0 {main} thrown in /home/technoon/public_html/dyenix/vendor/omines/datatables-bundle/src/Event/DataTableEvent.php on line 23