Fatal error: Uncaught Error: Class "GuzzleHttp\Promise\RejectionException" not found in D:\programs\xampp\htdocs\backend-test\vendor\guzzlehttp\promises\src\CancellationException.php:10 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\guzzlehttp\promises\src\CancellationException.php on line 10