Download Link No File Defined

Hello everyone.

following my learning by tring to set a valid download link that will be available in the client invoice emailed.

I′ve been Following the tutorial available here regarding AmazonS3
https://docs.woocommerce.com/document/amazon-s3-storage/#section-6

1- In the wordpres admin panel the Amazon S3 Storage Security Credentials are set
2- In the URL Valid Period, the “1” value is added
3- The short code link in the “product data” section is added this way:
[amazon_s3 bucket=bucket-multi-vendor-name-is-phil=the-file-name-that-the-client-will-download.rar]

At the end i have “no file defined” when clicking on the download link in the email confirmation.

What am i missing.
In advance thanks for the support.