Fatal error: Uncaught Error: Class 'Twig_Extension' not found in /home/lafaamicps/www/symfony/vendor/jms/serializer/src/JMS/Serializer/Twig/SerializerExtension.php:29 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/jms/serializer/src/JMS/Serializer/Twig/SerializerExtension.php on line 29