Attempted to concatenate a nil value error?

[MentallyAdvanced]

So im making this simple crafting system and this happened
[QUOTE][ERROR] gamemodes/owc/gamemode/modules/crafting_and_inventory/cl_dermamenu.lua:107: attempt to concatenate a nil value
1. DoClick - gamemodes/owc/gamemode/modules/crafting_and_inventory/cl_dermamenu.lua:107
2. unknown - lua/vgui/dlabel.lua:218

[/QUOTE]
I have tried everything, I don't get why it is nil even though I have a value for it

here is my current code

	for k,v in pairs(OWC.Config.Craft.entsArr)do
		local icon = vgui.Create("SpawnIcon", entityList)
		icon:SetModel(v[1])
		icon:SetToolTip(v[3].."\nMaterials Needed: "..v[4].."\nWood Needed: "..v[5])
		entityList:Add(icon)
		icon.DoClick = function(icon)
			net.Start("craft_entity")
				net.WriteInt(k,32)
			net.SendToServer()
		end
	end
	
	for k,v in pairs(OWC.Config.Craft.weaponsArr)do
		local icon = vgui.Create("SpawnIcon", weaponList)
		icon:SetModel(v[1])
		icon:SetToolTip(v[3].."\nMaterials Needed: "..v[4].."\nWood Needed: "..v[5])
		weaponList:Add(icon)
		icon.DoClick = function(icon)
			net.Start("craft_gun")
				net.WriteInt(k,32)
			net.SendToServer()
		end
	end
end

My config where the [] numbers are

--Weapon CRAFTING
OWC.Config.Craft.weaponsArr = OWC.Config.Craft.weaponsArr or {}
-- OWC.Config.Craft.weaponsArr[1] = {"","","","",""}
OWC.Config.Craft.weaponsArr[1] = {"models/weapons/w_cst_mac11.mdl","cw_mac11","MAC-11","25","20"}

--ENTITY CRAFTING
OWC.Config.Craft.entsArr = OWC.Config.Craft.entsArr or {}
-- OWC.Config.Craft.entsArr[1] = {"","","","",""}

[rtm516]

Which line is 107?

[MentallyAdvanced]

icon:SetToolTip(v[3].."\nMaterials Needed: "..v[4].."\nWood Needed: "..v[5])

[Rubat]

One of the v[3] v[4] v[5] must be nil. Print them out.

[Lemmie]

-snip-

[MentallyAdvanced]

Ok, so I put values there but now it is showing parts of another config for my shop, great