Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\HttpKernelBrowser" not found in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/KernelBrowser.php:31 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/KernelBrowser.php on line 31