WoW Version
Retail

AddOn skin name
Unknown

Describe the bug
1x [ADDON_ACTION_BLOCKED] AddOn 'Skinner' tried to call the protected function 'StanceBar:SetShownBase()'.
[string "@!BugGrabber/BugGrabber.lua"]:481: in function <!BugGrabber/BugGrabber.lua:481>
[string "=[C]"]: in function SetShownBase' [string "@FrameXML/ActionBar.lua"]:315: in function UpdateVisibility'
[string "@FrameXML/ActionBar.lua"]:302: in function ShowOverride' [string "@FrameXML/ActionBar.lua"]:292: in function SetShown'
[string "@FrameXML/StanceBar.lua"]:33: in function Update' [string "@FrameXML/ActionBarController.lua"]:132: in function <FrameXML/ActionBarController.lua:130> [string "=[C]"]: in function ActionBarController_UpdateAll'
[string "@FrameXML/ActionBarController.lua"]:66: in function <FrameXML/ActionBarController.lua:55>

Locals:
_ = Frame {
RegisterEvent = defined @!BugGrabber/BugGrabber.lua:487
0 =
UnregisterEvent = defined @!BugGrabber/BugGrabber.lua:487
SetScript = defined @!BugGrabber/BugGrabber.lua:487
}
event = "ADDON_ACTION_BLOCKED"
events =

{
ADDON_ACTION_BLOCKED = defined @!BugGrabber/BugGrabber.lua:553
ADDON_ACTION_FORBIDDEN = defined @!BugGrabber/BugGrabber.lua:553
PLAYER_LOGIN = defined @!BugGrabber/BugGrabber.lua:547
LUA_WARNING = defined @!BugGrabber/BugGrabber.lua:562
ADDON_LOADED = defined @!BugGrabber/BugGrabber.lua:507
}

I long time Error

Are you using an ActionBar AddOn?

If not I suggest you do so as I can't fix this issue because I don't know what's causing it.