Fatal error: Uncaught Error: Class "Aws\Multipart\AbstractUploader" not found in /srv/www/htdocs/moodle/lib/aws-sdk/src/S3/MultipartUploader.php:15 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/aws-sdk/src/S3/MultipartUploader.php on line 15