Fatal error: Uncaught Error: Class "Aws\Crypto\AbstractCryptoClient" not found in /srv/www/htdocs/moodle/lib/aws-sdk/src/S3/Crypto/S3EncryptionClient.php:31 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/aws-sdk/src/S3/Crypto/S3EncryptionClient.php on line 31