For me, this ended up being calling into UIImpactFeedbackGenerator too frequently. I think it's benign, it's just a message from the OS stating it can't satisfy your request for haptics at the frequency you are requesting.

Our team is hitting this issue as well, and these popups are seemingly infinite. Our testers have mentioned they're getting hit with dozens of these popups erroneously; the app is fine and installable. I've filed this as FB17115903