Fatal error: Uncaught Error: Class "Aws\AwsClient" not found in /srv/www/htdocs/moodle/lib/aws-sdk/src/MTurk/MTurkClient.php:87 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/aws-sdk/src/MTurk/MTurkClient.php on line 87