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