Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\HttpKernelBrowser' not found in /home/users/00/3c/21/home/www/vendor/symfony/framework-bundle/Client.php:28 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/symfony/framework-bundle/Client.php on line 28