I can double check tonight but it was about 80cm-100cm in that image. At that range it can’t detect it all. Maybe that’s just too close.
However Once it gets about 4m away I get the same error message but it flickers between that and being detected constantly.

I’m using a 360 kinect with a sunglasses lens over the camera. I tried Turing off the room lights but it didn’t have any effect.