Fatal error: Uncaught Error: Interface 'GuzzleHttp\Promise\PromiseInterface' not found in /home/xcddwtvp/public_html/aws-sdk-php/GuzzleHttp/Promise/Coroutine.php:46 Stack trace: #0 {main} thrown in /home/xcddwtvp/public_html/aws-sdk-php/GuzzleHttp/Promise/Coroutine.php on line 46