Fatal error: Uncaught Error: Interface "React\Promise\PromiseInterface" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/ezimuel/ringphp/src/Future/FutureInterface.php:19 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/ezimuel/ringphp/src/Future/FutureInterface.php on line 19