Fatal error: Uncaught Error: Interface "Symfony\Component\Config\ResourceCheckerInterface" not found in /homepages/18/d179646520/htdocs/PHPFUIWebsite/Symfony/Component/DependencyInjection/Config/ContainerParametersResourceChecker.php:21 Stack trace: #0 /homepages/18/d179646520/htdocs/PHPFUIWebsite/commonbase.php(15): include_once() #1 [internal function]: autoload('Symfony\\Compone...') #2 /homepages/18/d179646520/htdocs/PHPFUIWebsite/PHPFUI/InstaDoc/Controller.php(471): ReflectionClass->__construct('Symfony\\Compone...') #3 /homepages/18/d179646520/htdocs/PHPFUIWebsite/PHPFUI/InstaDoc/Controller.php(168): PHPFUI\InstaDoc\Controller->getConstructorParameters('Symfony\\Compone...') #4 /homepages/18/d179646520/htdocs/PHPFUIWebsite/www/index.php(120): PHPFUI\InstaDoc\Controller->display() #5 {main} thrown in /homepages/18/d179646520/htdocs/PHPFUIWebsite/Symfony/Component/DependencyInjection/Config/ContainerParametersResourceChecker.php on line 21