See https://id.wikipedia.org/w/index.php?title=Coming_to_Homerica&oldid=8387398 .
There is a <ref> error at the bottom.
What happened is that the article was translated partially and only one instance of <ref name="FF" /> was adapted. The actual content of the footnote, which appears further in the article, was not adapted.
This should be smarted and more automatic.