Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Mapping\AttributeMetadataInterface' not found in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/serializer/Mapping/AttributeMetadata.php:19 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webserivesits/vendor/symfony/serializer/Mapping/AttributeMetadata.php on line 19