The Beginning and the Middle of the Battle with C'Thun

[2018/04/24 23:51:21-2862-x56]: Plugins\Messages.lua:295: attempt to perform arithmetic on local r' (a nil value) Plugins\Messages.lua:295: in functionobj_method'
AceEvent-2.0\AceEvent-2.0.lua:315: in function TriggerEvent' BigWigs\Core.lua:612: in functionMessage'
AQ40\Cthun.lua:581: in function CThunWeakened' AQ40\Cthun.lua:457: in functionobj_method'
AceEvent-2.0\AceEvent-2.0.lua:315: in function TriggerEvent' Plugins\Comm.lua:51: in functionobj_method'
AceEvent-2.0\AceEvent-2.0.lua:315: in function `TriggerEvent'
AceEvent-2.0\AceEvent-2.0.lua:902: in function <...ns\LunaUnitFrames\libs\AceEvent-2.0\AceEvent-2.0.lua:894>

[2018/04/25 00:13:02-2862-x1]: Plugins\Messages.lua:295: attempt to perform arithmetic on local r' (a nil value) Plugins\Messages.lua:295: in functionobj_method'
AceEvent-2.0\AceEvent-2.0.lua:315: in function TriggerEvent' BigWigs\Core.lua:612: in functionMessage'
AQ40\Cthun.lua:581: in function CThunWeakened' AQ40\Cthun.lua:457: in functionobj_method'
AceEvent-2.0\AceEvent-2.0.lua:315: in function TriggerEvent' Plugins\Comm.lua:51: in functionCHAT_MSG_ADDON'
Plugins\Comm.lua:65: in function obj_method' AceEvent-2.0\AceEvent-2.0.lua:315: in functionTriggerEvent'
BigWigs\Core.lua:599: in function Sync' AQ40\Cthun.lua:421: in functionobj_method'
AceEvent-2.0\AceEvent-2.0.lua:315: in function `TriggerEvent'
AceEvent-2.0\AceEvent-2.0.lua:902: in function <...ns\LunaUnitFrames\libs\AceEvent-2.0\AceEvent-2.0.lua:894>

I use https://github.com/Hosq/BigWigs
Addon developer answer Hosq/BigWigs#41

Not Luna related. See my comment on Hosq/BigWigs#41