Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\DelegatingLoader" not found in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/Routing/DelegatingLoader.php:29 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/Routing/DelegatingLoader.php on line 29