aws bucket policy editor - Action does not apply to any resource(s) in statement

Question

I use the policy editor.
I then try and apply the policy I just created in the wizard but I get the above error

Answer 1

First get the bucket ARN. You can get this by clicking on the bucket row - but NOT the bucket link in that row. Which can be confusing to first timers. When you click on the row (but NOT the link) you get a bucket info panel with a 'Copy bucket ARN' button which is very handy. See here:

You paste it into the ARN field:

When you then generate the policy you will get something like this:

Here is the critical part

Once you have copied this, you need to add "/*" at the end of the resource (the S3 bucket), like this:

Finally you will get this message indicating that the operation succeeded