Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventDispatcherInterface' not found in /home/aucoeurdgw/dev/src/PrestaShopBundle/Event/Dispatcher/NullDispatcher.php:34 Stack trace: #0 {main} thrown in /home/aucoeurdgw/dev/src/PrestaShopBundle/Event/Dispatcher/NullDispatcher.php on line 34