Classic Era, Lua error with all addons disabled

Hello, I’m having a problem with Classic Era. Getting a Lua error even with all addons disabled and I’m out of ideas. Anyone had similar problem?

Message: …PanelManager/Classic/UIParentPanelManager_Shared.lua:1039: attempt to call global ‘FCF_DockUpdate’ (a nil value)
Time: Thu Sep 19 19:47:23 2024
Count: 1
Stack: …PanelManager/Classic/UIParentPanelManager_Shared.lua:1039: attempt to call global ‘FCF_DockUpdate’ (a nil value)
[string “@Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua”]:1039: in function UIParentManageFramePositions' [string "@Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua"]:328: in function <...PanelManager/Classic/UIParentPanelManager_Shared.lua:315> [string "=[C]"]: in function SetAttribute’
[string “@Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua”]:1049: in function UIParent_ManageFramePositions' [string "@Interface/AddOns/Blizzard_ActionBar/Classic/PetActionBarFrame.lua"]:36: in function <...Ons/Blizzard_ActionBar/Classic/PetActionBarFrame.lua:35> [string "=[C]"]: in function Show’
[string “@Interface/AddOns/Blizzard_ActionBar/Classic/PetActionBarFrame.lua”]:264: in function `ShowPetActionBar’
[string “@Interface/AddOns/Blizzard_ActionBar/Classic/PetActionBarFrame.lua”]:73: in function <…Ons/Blizzard_ActionBar/Classic/PetActionBarFrame.lua:54>

Locals: self = Frame {
0 =
ShowUIPanel = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:343
UpdateUIPanelPositions = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:684
HideUIPanel = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:632
UIParentManageFramePositions = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:809
UpdateScaleForFit = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:799
MoveUIPanel = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:612
ShowUIPanelFailed = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:542
SetUIPanel = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:548
GetUIPanel = defined @Interface/AddOns/Blizzard_UIParentPanelManager/Classic/UIParentPanelManager_Shared.lua:676
}
yOffsetFrames =

{
1 = “pet”
}
xOffsetFrames =
{
}
hasBottomLeft = nil
hasBottomRight = nil
hasPetBar = 1
anchorY = 0
buffsAnchorY = 0
rightActionBars = 0
numBossFrames = 0
(*temporary) = nil
(*temporary) = “attempt to call global ‘FCF_DockUpdate’ (a nil value)”
UIPARENT_VARIABLE_OFFSETS =
{
rightActionBarsX = 140.999939
}