このプラグインの公開は2019年7月5日に停止されており、ダウンロードできません。 理由: ガイドライン違反。
Then good news is that Amazon has taken security seriously. The bad news is that getting the credentials right has been a problem. While the use of the S3 storage on AWS has the potential, getting the IAM credentials right has been a problem (for me). Getting the bucket defined, the key ID and the actual key in the IAM seems simple. So far it has been rejected by the plugin and there has been no response to requests for help.