I worked with my host and they found the source of the problem. Below is a summary of what they found. I hope this information will be a good reference for anybody else experiencing similar problems. Also, perhaps the XenForo team can benefit from the knowledge that they do not have a handler...
I understand that the server is encountering an error. My question is - we have multiple threads about unfurling problems on this forum. The XenForo server for this forum seems to handle these errors gracefully by falling back to a plain link, while my web server doesn’t. I was hoping that you...
Links to certain sites do not unfurl properly. NPR is one of the most common we are seeing.
When we look at this XenForo help forum, failed unfurling links display as a regular link as a fallback. On our server however, it returns a pop-up error “Oops!" for users instead. How can we configure...