Static caching test returns:
FAILED - (No max-age or expires) - http://www.my-site.com/favicon.ico
FAILED - (No max-age or expires) - http://www.my-site.com/favicon.ico
However, there are no favicon.ico files in the entire site
Not sure what causes this or how to fix it.
Most browsers automatically check for the presence of favicon.ico in your document root, whether you have one or not. While I would recommend creating a favicon, there’s technically nothing for you to fix here.
Also, make sure there’s nothing in your HTML that points to a favicon when you don’t have one.