Fatal error: Uncaught Error: Class "Aws\Api\Parser\AbstractParser" not found in C:\WebServer\htdocs\bookshelf\vendor\aws\aws-sdk-php\src\S3\RetryableMalformedResponseParser.php:17 Stack trace: #0 {main} thrown in C:\WebServer\htdocs\bookshelf\vendor\aws\aws-sdk-php\src\S3\RetryableMalformedResponseParser.php on line 17