Structured Data Error Because of the Gravatar Profile Image/Photo

I was having a structured data error in my AMP pages. The structured data testing tool said it as:

Error
image: A value for the image field is required.

Warning
The image field is recommended. Please provide a value if available.

I had said about it earlier here. I tried all the gimmicks by removing/updating my profile on the dashboard on my domain, changing/removing the logo, as well as with the images on the individual pages/posts, but of no use.

Now I removed the photo from my gravatar profile, and the error is gone.

This is for the kind attention of the plugin developers, so that they could fix this structured data error of the gravatar image (of the author of the pages/posts) in the upcoming releases.

The page I need help with: [log in to see the link]