Fatal error: Uncaught Error: Class "JMS\Serializer\EventDispatcher\ObjectEvent" not found in /home/flighto/e-commerce/vendor/jms/serializer/src/EventDispatcher/PreSerializeEvent.php:7 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/jms/serializer/src/EventDispatcher/PreSerializeEvent.php on line 7