Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in D:\Application\www\E-Tracking\vendor\guzzlehttp\promises\src\FulfilledPromise.php:10 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\guzzlehttp\promises\src\FulfilledPromise.php on line 10