User blog comment:Rupert Giles/Introducing Curated Main Pages/@comment-4129195-20150910222800/@comment-4129195-20150910224736

And ah, I tried to add Featured Content into the page and publish the edits, but it says "Please fix errors inside items".

For an added effect, even trying to null edit it (just to open the window and immediately press publish), it still writes the same error message.