Sim can't extinguish fire (and firefighters won't)

A fire started in my sims' house, but no one can extinguish it.  When I tell my sims to extinguish it they wave their arm around and say there's no route.  Firefighters came before I unlocked my gate, so they're just standing around and I can't ask them to put out the fire.  Is there a way to put it out, or do I have to wait for it to go out on its own?

Attached is a picture of the situation.

EDIT: In case you're wondering, I use no mods.