Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/cooplafobq/newplanning/vendor/liip/imagine-bundle/DependencyInjection/LiipImagineExtension.php:23 Stack trace: #0 {main} thrown in /home/cooplafobq/newplanning/vendor/liip/imagine-bundle/DependencyInjection/LiipImagineExtension.php on line 23