Fatal error: Uncaught Error: Interface 'Psr\EventDispatcher\EventDispatcherInterface' not found in /home/endaecopft/www/webinaire/vendor/symfony/event-dispatcher-contracts/EventDispatcherInterface.php:19 Stack trace: #0 {main} thrown in /home/endaecopft/www/webinaire/vendor/symfony/event-dispatcher-contracts/EventDispatcherInterface.php on line 19