I'm getting the following error with the addon enabled, without it I don't get errors:

3966x Blizzard_InspectUI\InspectPVPFrame.lua:80: Usage: UnitFactionGroup("unit" [,checkDisplayRace])
[C]: in function `UnitFactionGroup'
Blizzard_InspectUI\InspectPVPFrame.lua:80: in function `InspectPVPFrame_Update'
Blizzard_InspectUI\InspectPVPFrame.lua:60: in function <Blizzard_InspectUI\InspectPVPFrame.lua:58>

Locals:
(*temporary) = nil

It also looks like some of the number are miscolored: https://imgur.com/4Ab9Xxq