Fatal error: Uncaught Error: Class 'Aws\Signature\S3SignatureV4' not found in /home/wwvicp/public_html/API2/vendor/aws/aws-sdk-php/src/Signature/S3ExpressSignature.php:9 Stack trace: #0 {main} thrown in /home/wwvicp/public_html/API2/vendor/aws/aws-sdk-php/src/Signature/S3ExpressSignature.php on line 9