Fatal error: Uncaught Error: Class 'Twig_Node' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/formatter-bundle/Twig/Node/GistNode.php:14 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/formatter-bundle/Twig/Node/GistNode.php on line 14