Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\EventListener\AbstractSessionListener" not found in C:\xampp\htdocs\slip\Warranty-UploadFile\vendor\symfony\http-kernel\EventListener\SessionListener.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\slip\Warranty-UploadFile\vendor\symfony\http-kernel\EventListener\SessionListener.php on line 23