What is there wrong? "Argument 1 missing or nil" [closed]

What is here wrong?

game.Workspace.Timer.Changed:Connect(function()
    script.Parent.Text = game.Workspace.Timer.Value
end)

game.Workspace.Timer.Changed:Connect(function()
    if game.Workspace.Timer.Value == 0 then
        script.Parent.Parent.Parent.TPGUI.Frame:TweenPosition(UDim2.new(0.349, 0,0.331, 0))
    end

end)

game.Workspace.Simon.Players.Changed:Connect(function()
    local simon = game.Workspace.Simon
    if simon.Players.Value >= 2 then
        script.Parent.Text = "Game is starting in some seconds.."
    else
        script.Parent.Text = "Not enough players to start 2 players are begin needed in 30 Seconds Countdown will restart.."
        game.Workspace.Timeout.Script.Start:InvokeServer()

    end
end)