Fatal error: Uncaught Error: Interface "GuzzleHttp\Promise\PromisorInterface" not found in /home/sourceex/public_html/pm/vendor/aws/aws-sdk-php/src/CommandPool.php:13 Stack trace: #0 {main} thrown in /home/sourceex/public_html/pm/vendor/aws/aws-sdk-php/src/CommandPool.php on line 13