Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\ParameterBag" not found in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/symfony/http-foundation/FileBag.php:22 Stack trace: #0 {main} thrown in /home/.sites/site4/wwwroot/web/4.0/ui/vendor/symfony/http-foundation/FileBag.php on line 22