Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/zdpktgd/ptc/vendor.old/symfony/monolog-bundle/DependencyInjection/MonologExtension.php:47 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/monolog-bundle/DependencyInjection/MonologExtension.php on line 47