Fatal error: Uncaught Error: Interface "Aws\Crypto\MaterialsProviderInterface" not found in /srv/www/htdocs/moodle/lib/aws-sdk/src/Crypto/MaterialsProvider.php:4 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/aws-sdk/src/Crypto/MaterialsProvider.php on line 4