Fatal error: Uncaught Error: Interface 'GuzzleHttp\Promise\PromiseInterface' not found in C:\xampp\htdocs\api-login\vendor\guzzlehttp\promises\src\FulfilledPromise.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\api-login\vendor\guzzlehttp\promises\src\FulfilledPromise.php on line 15