Fatal error: Uncaught Error: Class 'Aws\AwsClient' not found in /var/www/html/vendor/aws/aws-sdk-php/src/RDSDataService/RDSDataServiceClient.php:21 Stack trace: #0 {main} thrown in /var/www/html/vendor/aws/aws-sdk-php/src/RDSDataService/RDSDataServiceClient.php on line 21