Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/users/00/3c/21/home/www/vendor/nelmio/cors-bundle/DependencyInjection/NelmioCorsExtension.php:22 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/nelmio/cors-bundle/DependencyInjection/NelmioCorsExtension.php on line 22