Fatal error: Uncaught Error: Class "Aws\Signature\SignatureV4" not found in /home/alotaishan/public_html/ots001/vendor/aws/aws-sdk-php/src/Signature/S3SignatureV4.php:13 Stack trace: #0 {main} thrown in /home/alotaishan/public_html/ots001/vendor/aws/aws-sdk-php/src/Signature/S3SignatureV4.php on line 13