Fatal error: Uncaught Error: Class "Aws\AwsClient" not found in /srv/www/htdocs/moodle/lib/aws-sdk/src/Emr/EmrClient.php:122 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/aws-sdk/src/Emr/EmrClient.php on line 122