You in particular have that effect on foxes. I'm working on identifying the issue, and I think I've found it: You're too damn cute and they just can't resist.
Also there's text in the input that should be strictly numerical, meaning that I'm trying to stuff a word into a place a number goes, meaning that it's literally telling me outright "That's not a number", which is the same failstate as "the word 'infinity' isn't a number either". But you being too cute is probably the issue.