Fatal error: Uncaught Error: Class 'JMS\Serializer\EventDispatcher\ObjectEvent' not found in /home/itscm/dev.its.cm/itsgateway/vendor/jms/serializer/src/EventDispatcher/PreSerializeEvent.php:7 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/itsgateway/vendor/jms/serializer/src/EventDispatcher/PreSerializeEvent.php on line 7