Just throw an error... nothing more

lua/entities/gmod_wire_expression2/core/hologram.lua

@@ -521,8 +521,10 @@ end
 
 -- Returns the hologram with the given index or nil if it doesn't exist.
 -- if shouldbenil is nil or false, assert that the hologram exists on @strict with an error. Otherwise, don't check (for holo creation, etc)
+local MAX_INDEX = 2 ^ 31
 local function CheckIndex(self, index, shouldbenil)
-	index = math.Clamp(math.floor(index), -2^31, 2^31)
+	if index ~= index then return self:throw("holo index is NaN!", 0) end
+	index = math.Clamp(math.floor(index), -MAX_INDEX, MAX_INDEX)
 	local Holo
 	if index<0 then
 		Holo = E2HoloRepo[self.uid][-index]