Fatal error: Uncaught Error: Class "Twig_Extension" not found in /home/kiwakim/stock/vendor/jms/serializer/src/JMS/Serializer/Twig/SerializerExtension.php:13 Stack trace: #0 {main} thrown in /home/kiwakim/stock/vendor/jms/serializer/src/JMS/Serializer/Twig/SerializerExtension.php on line 13