Fatal error: Uncaught Error: Interface 'GuzzleHttp\Promise\PromisorInterface' not found in /home/xcddwtvp/public_html/aws-sdk-php/Aws/S3/Transfer.php:19
Stack trace:
#0 {main}
thrown in /home/xcddwtvp/public_html/aws-sdk-php/Aws/S3/Transfer.php on line 19