So I must come back to this. I got the same error reported when combining this mod with Lignumis and AAI Instustry. The problem is the "4" in
table.insert(data.raw.technology["electronics"].effects, 4, {
type = "unlock-recipe",
recipe = "big-lab",
})
in data-finalfiex.lua
. The explicit position assumes the technology effects haven't been altered and that's just not the case here.
Could you remove the position? Just add it to the end.