Fatal error: Uncaught Error: Class 'Twig_Extension' not found in /home/cgenial/cgenial/vendor/liip/imagine-bundle/Templating/ImagineExtension.php:16 Stack trace: #0 {main} thrown in /home/cgenial/cgenial/vendor/liip/imagine-bundle/Templating/ImagineExtension.php on line 16