Fatal error: Uncaught Error: Interface 'Aws\Signature\SignatureInterface' not found in /home/xcddwtvp/public_html/aws-sdk-php/Aws/Signature/SignatureV4.php:22 Stack trace: #0 {main} thrown in /home/xcddwtvp/public_html/aws-sdk-php/Aws/Signature/SignatureV4.php on line 22