Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\EventListener\AbstractSessionListener" not found in E:\xampp\htdocs\stms\vendor\symfony\http-kernel\EventListener\SessionListener.php:29 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\symfony\http-kernel\EventListener\SessionListener.php on line 29