XF 2.2 RSS feed issue


Has there any change to Xenforo RSS feed recently? On my main site WordPress page, I have an RSS widget that uses below as source URL:


Recently this stopped working and below error is shown:

Recent Forum Posts
RSS Error: WP HTTP Error: A valid URL was not provided.

Any idea?
Issue resolved now.

"CURL was not working which WordPress needs, WordPress could not access services outside of the server
I have updated your /etc/resolv.conf for you to resolve the system help issues"
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