Fatal error: Uncaught Error: Interface "Symfony\Component\Config\ResourceCheckerInterface" not found in /home/zdpktgd/ptc/vendor.old/symfony/dependency-injection/Config/ContainerParametersResourceChecker.php:21 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/dependency-injection/Config/ContainerParametersResourceChecker.php on line 21