Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\EventListener\AbstractSessionListener' not found in C:\xampp\htdocs\print-bk\vendor\symfony\http-kernel\EventListener\SessionListener.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print-bk\vendor\symfony\http-kernel\EventListener\SessionListener.php on line 28