Fatal error: Uncaught Error: Class "GuzzleHttp\Promise\RejectionException" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/guzzlehttp/promises/src/CancellationException.php:10 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/guzzlehttp/promises/src/CancellationException.php on line 10