Error with profession book

[MaryniaMiccayla]

1x [ADDON_ACTION_BLOCKED] AddOn 'DeModal' tried to call the protected function 'UNKNOWN()'.
[string "@!BugGrabber/BugGrabber.lua"]:481: in function <!BugGrabber/BugGrabber.lua:481>
[string "=[C]"]: ?
[string "=[C]"]: ?
[string "=[C]"]: in function Show' [string "@FrameXML/UIParent.lua"]:3245: in function ShowUIPanel'
[string "@FrameXML/SpellBookFrame.lua"]:75: in function `ToggleSpellBook'
[string "TOGGLEPROFESSIONBOOK"]:1: in function <[string "TOGGLEPROFESSIONBOOK"]:1>

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
}