Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromiseInterface" not found in D:\xampp\htdocs\ebaymotors\vendor\guzzlehttp\promises\src\Promise.php:10 Stack trace: #0 {main} thrown in D:\xampp\htdocs\ebaymotors\vendor\guzzlehttp\promises\src\Promise.php on line 10