Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\ParameterBag" not found in /home/lun45tyra31/public_html/demo/vendor/symfony/http-foundation/ServerBag.php:21 Stack trace: #0 {main} thrown in /home/lun45tyra31/public_html/demo/vendor/symfony/http-foundation/ServerBag.php on line 21