Since updating to Factorio 0.13.15 the FAIR EvoGUI Sensors have been reporting all resource fairnesses as Infinty%.

I do have a screen shot of the problem, but can't upload it here apparently.

I have wondered whether it could be an incompatibility with the Big Brother mod, but it was working OK until I updated to 0.13.15.

My other active mods are Agebt Orange, Bergius Process, Double Reach, EvoGUI, FAIR 0.0.1, Foreman, KS_Power, Reinforced Walls, Spawn_Gear, YARM, fluid barrel, no more redundancies and RSO

Let me know whether you need more info on this.