Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\EventListener\AbstractTestSessionListener" not found in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\EventListener\TestSessionListener.php:23 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\EventListener\TestSessionListener.php on line 23