Reflection probe shows up black

Hello,
Added a reflection probe to my scene to finish up a room, but the probe doesn't seem to see the floor. I can look into the probe gizmo and see all the walls represented, but the floor just looks black. The mesh is set to static and lights are set to baked, I'm just not sure why i'm getting black reflections. I suppose I could live with it except there is a mirror surface in the room that needs a somewhat accurate reflection to be convincing. Any ideas?

Edit: Seems to have given me better results if I set shadow distance to 0 and turned off the directional light