Fatal error: Uncaught Error: Interface 'JMS\Serializer\VisitorInterface' not found in /home/users/00/3c/21/home/www/vendor/jms/serializer/src/AbstractVisitor.php:10 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/jms/serializer/src/AbstractVisitor.php on line 10