Fatal error: Uncaught Error: Class "GraphQL\Executor\Promise\Adapter\SyncPromise" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/webonyx/graphql-php/src/Deferred.php:10 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/webonyx/graphql-php/src/Deferred.php on line 10