Why is the motorized power nozzle brush no longer spinning?

Why is the motorized power nozzle brush no longer spinning?

So the brush on my DC35 motorized power nozzle doesn’t spin anymore. It’s not jammed, and there’s actually no voltage at the nozzle motor whatsoever, nor at the accessory connector on the vacuum motor assembly itself if I detach the power nozzle. The vacuum itself seems to work fine, though at the same time I noticed that the green light around the “max” button no longer lights (but max mode still works - weird).