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