I am using the basic Facebook page plugin on my website and getting the same problem. I am not using WordPress or Jetpack plugin.
I suspect there is an issue on facebook’s side. We thought maybe there was a conflict with something on our website but the issue was still there when i tried on a bare bones HTML/CSS website.
I see this error message: “There was a problem with this request. We’re working on getting it fixed as soon as we can.”
What is strange is that posts seems to load fine when getting the code from the Facebook Page Plugin landing page but stops working once its on a website. Hope this helps and please write back if you find something? thanks! FYI this started two days ago: 11/11/20
