Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\FileLoader" not found in /home/zdpktgd/ptc/vendor.old/symfony/config/Loader/GlobFileLoader.php:19 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/config/Loader/GlobFileLoader.php on line 19