Fatal error: Uncaught Error: Class "JMS\Serializer\Twig\SerializerBaseExtension" not found in /var/www/html/src/vendor/jms/serializer/src/Twig/SerializerExtension.php:17 Stack trace: #0 {main} thrown in /var/www/html/src/vendor/jms/serializer/src/Twig/SerializerExtension.php on line 17