[SanDBoX]

I am working on a group of prenested tables, such as

["Cook"] = {
        ["Tier1"] = {
                ["Recipe1"] = { Name = "Apprentice's Ale Recipe", SingleUse = false },
                ["Recipe2"] = { Name = "Barley Soup Recipe", SingleUse = false },
                ["Recipe3"] = { Name = "Bold Stout Recipe", SingleUse = false },
        }
}

now my problem is when I import the file it gives a "attempt to index a nil value" on the last line, any clue why it throws that error? tried adding additional values and still does it on the closing bracket...