False negative?

[Trapbarn]

Getting this error ''''

Line: 40 https://www.trapbarn.com/xmlrpc.php?rsdStatus: 403 Forbidden
The link is forbidden! This needs fixing. Usual suspects: a missing index.html or Overview.html, or a missing ACL.

The relevant code is..
<link rel="https://api.w.org/" href="https://www.trapbarn.com/wp-json/"/><link rel=alternate type="application/json" href="https://www.trapbarn.com/wp-json/wp/v2/pages/3996"/><link rel=EditURI type="application/rsd+xml" title=RSD href="https://www.trapbarn.com/xmlrpc.php?rsd"/>

I jsut can't work out where this comes from or how to fix it. Please help.

 

[Fillip H.]

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