WoW Version
Which version of WoW this bug occurs in: ( Wrath Classic )

AddOn skin name
Skinner

Describe the bug
This is the error I get when I load into the game.

Date: 2023-10-11 15:44:54
ID: 1
Error occured in: Global
Count: 1
Message: ...e/AddOns/Skinner/ClassicSupport/UIFrames_Classic.lua line 9:
attempt to call field 'IsLookingForGroupEnabled' (a nil value)
Debug:
[string "=(tail call)"]: ?
[string "@Interface/AddOns/Skinner/ClassicSupport/UIFrames_Classic.lua"]:9:
...e/AddOns/Skinner/ClassicSupport/UIFrames_Classic.lua:6
[string "@Interface/AddOns/Skinner/ClassicSupport/UIFrames_Classic.lua"]:793: SetupClassic_UIFramesOptions()
[string "@Interface/AddOns/Skinner/Core/Skinner.lua"]:114:
Interface/AddOns/Skinner/Core/Skinner.lua:50
[string "=[C]"]: ?
[string "@Interface/AddOns/DataStore/libs/AceAddon-3.0/AceAddon-3.0.lua"]:66:
.../AddOns/DataStore/libs/AceAddon-3.0/AceAddon-3.0.lua:61
[string "@Interface/AddOns/DataStore/libs/AceAddon-3.0/AceAddon-3.0.lua"]:494: InitializeAddon()
[string "@Interface/AddOns/DataStore/libs/AceAddon-3.0/AceAddon-3.0.lua"]:619:
.../AddOns/DataStore/libs/AceAddon-3.0/AceAddon-3.0.lua:611
Locals:
(*temporary) = defined =[C]:-1