Fatal error: Uncaught Error: Interface 'Psr\EventDispatcher\StoppableEventInterface' not found in /home/szfwxvyz/data-a23/a23/data/old/vendor/symfony/event-dispatcher-contracts/Event.php:31 Stack trace: #0 {main} thrown in /home/szfwxvyz/data-a23/a23/data/old/vendor/symfony/event-dispatcher-contracts/Event.php on line 31