Fatal error: Uncaught Error: Class 'Symfony\Component\EventDispatcher\Event' not found in /home/aucoeurdgw/dev/src/PrestaShopBundle/Service/Hook/HookEvent.php:38 Stack trace: #0 {main} thrown in /home/aucoeurdgw/dev/src/PrestaShopBundle/Service/Hook/HookEvent.php on line 38