Fatal error: Uncaught Error: Class "JMS\Serializer\Handler\HandlerRegistry" not found in /home/activeexcavators/public_html/vendor copy/jms/serializer/src/Handler/LazyHandlerRegistry.php:11 Stack trace: #0 {main} thrown in /home/activeexcavators/public_html/vendor copy/jms/serializer/src/Handler/LazyHandlerRegistry.php on line 11