plop

game/modules/tome/data/general/objects/quest-artifacts.lua

@@ -391,6 +391,7 @@ Items in the chest will not encumber you.]],
 	use_power = { name = "transmogrify all the items in your chest at once (also done automatically when you change level)", power = 0,
 		no_npc_use = true,
 		use = function(self, who)
+			if not who.player then return {id=true, used=false} end
 			local inven = who:getInven("INVEN")
 			local nb = 0
 			for i = #inven, 1, -1 do