Fatal error: Uncaught Error: Class 'Twig_Extension' not found in /home/lafaamicps/www/symfony/vendor/twig/extensions/lib/Twig/Extensions/Extension/Date.php:18 Stack trace: #0 /home/lafaamicps/www/symfony/vendor/twig/extensions/test/Twig/Tests/Extension/DateTest.php(11): require_once() #1 {main} thrown in /home/lafaamicps/www/symfony/vendor/twig/extensions/lib/Twig/Extensions/Extension/Date.php on line 18