Fatal error: Uncaught Error: Class "Aws\AwsClient" not found in C:\WebServer\htdocs\bookshelf\vendor\aws\aws-sdk-php\src\OpenSearchService\OpenSearchServiceClient.php:173 Stack trace: #0 {main} thrown in C:\WebServer\htdocs\bookshelf\vendor\aws\aws-sdk-php\src\OpenSearchService\OpenSearchServiceClient.php on line 173