Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in D:\Apache24\www\qilupro\back-end\vendor\symfony\console\Event\ConsoleEvent.php:24 Stack trace: #0 {main} thrown in D:\Apache24\www\qilupro\back-end\vendor\symfony\console\Event\ConsoleEvent.php on line 24