Always getting LUA Errors after targeting an npc/player with long name.

Message: Interface\AddOns\LunaUnitFrames\modules\tags.lua:465: attempt to index global 'abbrevCache' (a nil value)
Time: Sun Jun 2 00:35:51 2019
Count: 3386
Stack: Interface\AddOns\LunaUnitFrames\modules\tags.lua:465: attempt to index global 'abbrevCache' (a nil value)
Interface\AddOns\LunaUnitFrames\modules\tags.lua:465: in function `?'
Interface\AddOns\LunaUnitFrames\modules\tags.lua:814: in function <Interface\AddOns\LunaUnitFrames\modules\tags.lua:804>

Locals: unit = "target"
name = "Mountaineer Langarr"
(*temporary) = nil
(*temporary) = "Mountaineer Langarr"
(*temporary) = "attempt to index global 'abbrevCache' (a nil value)"