Fatal error: Uncaught Error: Class "Aws\Signature\S3SignatureV4" not found in /home/alotaishan/public_html/ots001/vendor/aws/aws-sdk-php/src/Signature/S3ExpressSignature.php:9 Stack trace: #0 {main} thrown in /home/alotaishan/public_html/ots001/vendor/aws/aws-sdk-php/src/Signature/S3ExpressSignature.php on line 9