Cool visuals, pretty well made, but often unclear on what goes where and why. I gave a prefab to a bubble and I still don’t get what was supposed to give me a hint here. :s
The bubble is an empty gameobject, being used as a fire point. If you speak with him before bringing the prefab he is looking for "something" in his folder. We admit he is the most ambiguous of the warnings. Hope that helps clear him up. :)