Fatal error: Uncaught Error: Class "Aws\Signature\SignatureV4" not found in C:\Apache24\htdocs\ControlMantWeb\vendor\aws\aws-sdk-php\src\Signature\S3SignatureV4.php:13 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\ControlMantWeb\vendor\aws\aws-sdk-php\src\Signature\S3SignatureV4.php on line 13