Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface" not found in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/DependencyInjection/Compiler/RemoveUnusedSessionMarshallingHandlerPass.php:20 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/DependencyInjection/Compiler/RemoveUnusedSessionMarshallingHandlerPass.php on line 20