Why wont a DataStore array work?

I am working on a ban script, anyway... upon starting the game it gives me this error: ServerScriptService.Script:11: attempt to index local 'banData' (a nil value)

Here is the script:

game.Players.PlayerAdded:connect(function(player)
    print("Loading banData for " .. player.UserId)

    local dataStoreService = game:GetService("DataStoreService")
    local data = dataStoreService:GetDataStore("banData")

    local banData = data:GetAsync(player.UserId .. "Data")

    print("banData loaded for " .. player.UserId)

    if not banData[1] == "" then
        print("Player " .. player.UserId .. "attemped to join the game, but was kicked.")
        print("Reason: 'You have been banned by " .. banData[1] .. "for " .. banData[2] .. ". Please PM " .. banData[1] .. " to appeal the ban.'")
        player.Kick("You have been banned by " .. banData[1] .. "for " .. banData[2] .. ". Please PM " .. banData[1] .. " to appeal the ban.")
    end
end)

The data should look like this

DATA
    > banData
        - 119226470Data
          -{"AlphaGamer150", "Testing"}