Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag" not found in /home/zdpktgd/ptc/vendor.old/symfony/dependency-injection/ParameterBag/ContainerBag.php:19 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/dependency-injection/ParameterBag/ContainerBag.php on line 19