Fatal error: Uncaught Error: Interface "JMS\Serializer\GraphNavigatorInterface" not found in /home/kiwakim/stock/vendor/jms/serializer/src/JMS/Serializer/GraphNavigator.php:27 Stack trace: #0 {main} thrown in /home/kiwakim/stock/vendor/jms/serializer/src/JMS/Serializer/GraphNavigator.php on line 27