Fatal error: Uncaught Error: Interface "React\Promise\PromiseInterface" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm--/vendor/react/promise/src/CancellablePromiseInterface.php:5 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm--/vendor/react/promise/src/CancellablePromiseInterface.php on line 5