Lua error when open adventure guide

Hello World,

I encounter an Lua Error when I open the adventure guide.
My game is fully vanilla without any add-ons.
I already reset the game, reinstalled on another PC, it’s a reproductible issue.

If you have any question, I will be glad to answer you.

Best Regards,
Linuxydable

There is the error:

Message: …ace/AddOns/Blizzard_ClassMenu/Blizzard_ClassMenu.lua:68: attempt to index local ‘color’ (a nil value)
Time: Sat May 3 00:32:20 2025
Count: 3
Stack:
[Interface/AddOns/Blizzard_ClassMenu/Blizzard_ClassMenu.lua]:68: in function <…ace/AddOns/Blizzard_ClassMenu/Blizzard_ClassMenu.lua:56>
[Interface/AddOns/Blizzard_ClassMenu/Blizzard_ClassMenu.lua]:110: in function <…ace/AddOns/Blizzard_ClassMenu/Blizzard_ClassMenu.lua:87>
[C]: in function ‘securecallfunction’
[Interface/AddOns/Blizzard_Menu/Menu.lua]:2566: in function ‘PopulateDescription’
[Interface/AddOns/Blizzard_Menu/DropdownButton.lua]:252: in function <Interface/AddOns/Blizzard_Menu/DropdownButton.lua:251>
[C]: in function ‘securecallfunction’
[Interface/AddOns/Blizzard_Menu/DropdownButton.lua]:262: in function ‘GenerateMenu’
[Interface/AddOns/Blizzard_Menu/DropdownButton.lua]:247: in function ‘SetupMenu’
[Interface/AddOns/Blizzard_ClassMenu/Blizzard_ClassMenu.lua]:87: in function ‘InitClassSpecDropdown’
[Interface/AddOns/Blizzard_EncounterJournal/Mainline/Blizzard_EncounterJournal.lua]:484: in function ‘EncounterJournal_SetupLootFilterDropdown’
[Interface/AddOns/Blizzard_EncounterJournal/Mainline/Blizzard_EncounterJournal.lua]:761: in function <…ounterJournal/Mainline/Blizzard_EncounterJournal.lua:684>
[C]: in function ‘Show’
[Interface/AddOns/Blizzard_UIParentPanelManager/Mainline/UIParentPanelManager.lua]:494: in function ‘SetUIPanel’
[Interface/AddOns/Blizzard_UIParentPanelManager/Mainline/UIParentPanelManager.lua]:337: in function ‘ShowUIPanel’
[Interface/AddOns/Blizzard_UIParentPanelManager/Mainline/UIParentPanelManager.lua]:174: in function <…ParentPanelManager/Mainline/UIParentPanelManager.lua:169>
[C]: in function ‘SetAttribute’
[Interface/AddOns/Blizzard_UIParentPanelManager/Mainline/UIParentPanelManager.lua]:894: in function ‘ShowUIPanel’
[Interface/AddOns/Blizzard_UIParentPanelManager/Mainline/UIParentPanelManager.lua]:854: in function ‘ToggleFrame’
[Interface/AddOns/Blizzard_UIParent/Mainline/UIParent.lua]:988: in function ‘ToggleEncounterJournal’
[TOGGLEENCOUNTERJOURNAL]:1: in function <[string “TOGGLEENCOUNTERJOURNAL”]:1>

Locals:
filterClassID = 14
classInfo =

{
classID = 14
classFile = “Adventurer”
className = “Aventurier”
}
color = nil
(*temporary) = “Aventurier”
(*temporary) = 14
(*temporary) = 14
(*temporary) = “attempt to index local ‘color’ (a nil value)”