Fatal error: Uncaught Error: Class "ApiPlatform\Serializer\AbstractItemNormalizer" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/api-platform/core/src/Serializer/ItemNormalizer.php:38 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/api-platform/core/src/Serializer/ItemNormalizer.php on line 38