I have recently installed a Moodle 4.0.2. It's a bitnami installation and it came with Amazon S3 repository plugin installed as well. When I try to add a file to a course and use the filepicker, it shows all the buckets, but when I click on a specific bucket, I see this error:
Debug info: S3::getBucket(): [InvalidRequest] The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256. Error code: errorwhilecommunicatingwith
Any ideas how to solve this?