I want non-authorized download from an S3 bucket. I’ve enabled all options for public access and ACL. After a adjusting the settings, I finally no longer got the access denied error. However, now I can’t find any files. All the data I’ve uploaded, I did through the AWS web.

Bucket Policy:

{
"Version": "2012-10-17",
"Statement": [
    {
        "Sid": "PublicRead",
        "Effect": "Allow",
        "Principal": "*",
        "Action": "s3:GetObject",
        "Resource": "arn:aws:s3:::<the bucket>/*"
    }
]}

Now I have a new problem. I can’t find the files, I get this error:

NoSuchKeyThe specified key does not exist.public//100/gif1.gif (Service: Amazon S3; Status Code: 404; Error Code: 404 Not Found; Request ID: ***’),

Here’s the code:

Future<void> downloadFromS3(String key) async {
  try {
    final localPath = await getApplicationDocumentsDirectory();
    final filePath = '$localPath/$key';

    final result = await Amplify.Storage.downloadFile(
      key: "/100/$key",
      local: File(filePath),
    );
  } catch (e) {
    print('Error downloading file [$key] : $e');
  }
}

Then I run:

  await configureAmplify();
  await downloadFromS3('gif1.gif');

My bucket is structured like this: myBucket/100/gif1.gif.

I’ve been stuck on this for awhile now, the only thing I can assume is the problem is that in the error code you can see a public prefix “public//100/gif1.gif”. Which I don’t have, I’ve tried creating a folder “public” like this myBucket/public/folder100/file. However, that didn’t really work either.

What’s wrong?