Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /home/zdpktgd/ptc/vendor.old/doctrine/doctrine-migrations-bundle/DependencyInjection/DoctrineMigrationsExtension.php:33 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/doctrine/doctrine-migrations-bundle/DependencyInjection/DoctrineMigrationsExtension.php on line 33