Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher" not found in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\Debug\TraceableEventDispatcher.php:25 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\Debug\TraceableEventDispatcher.php on line 25