"Download Exported Course" from S3

Version : Koa native installation

As the picture above , I want to download the exported course file from S3.
But I meet the “Access denied” problem.

Below is my S3 bucket rule:

"Effect": "Allow",
            "Action": [
            "Resource": [

Is there anything wrong ?

@guangyaw, it is a good idea to have the corresponding IAM user have all the permissions on the bucket. Here is an example from a policy that I have attached to such a user.

    "Version": "2012-10-17",
    "Statement": [
            "Sid": "",
            "Effect": "Allow",
            "Action": "s3:*",
            "Resource": [

Can you try this and let me know if it resolved your problem?

No, this could not resolved my problem.
Still “Access Denied” .