Fatal error: Uncaught Error: Class "Aws\Signature\SignatureV4" not found in E:\phpProject\TEST\fr_epr\fr_epr_reg\vendor\aws\aws-sdk-php\src\Signature\S3SignatureV4.php:13 Stack trace: #0 {main} thrown in E:\phpProject\TEST\fr_epr\fr_epr_reg\vendor\aws\aws-sdk-php\src\Signature\S3SignatureV4.php on line 13