Yay, that fixed the problem!! Thanks every one that helped me.

Im trying to make my own mod for the first time and this keeps popping up.
help.PNG

Here's the code:
data:extend ({{

electric2 = util.table.deepcopy(data.raw["furnace"]["electric-furnace"])
electric2.name = "Eletrice-Furnace-Mk2"
electric2.icon = "__FirstMod__/graphics/electric-furnace-2.png ...