Fatal error: Uncaught Error: Interface 'JMS\Serializer\Handler\SubscribingHandlerInterface' not found in /home/itscm/dev.its.cm/itsrestapi/vendor/friendsofsymfony/rest-bundle/Serializer/Normalizer/FormErrorHandler.php:28 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/itsrestapi/vendor/friendsofsymfony/rest-bundle/Serializer/Normalizer/FormErrorHandler.php on line 28