Mouse text on hover script Not works why?

I maked a Mouse text on a hover thing for my door but it isn't working the problem is that: Workspace.Mouse Text on hover.Script:6: attempt to index field 'LocalPlayer' (a nil value) And i can't fix it any help? and the script is here: SCRIPT:

local sg = script.Parent:GetChildren()

for i = 1, #sg do
    if sg[i].className == "SurfaceGui" then
        sg[i].TextLabel.MouseEnter:connect(function()
            game.Players.LocalPlayer.PlayerGui.MouseText.NewMouse.Visible = true
            game.Players.LocalPlayer.PlayerGui.MouseText.NewMouse.IconText.Text = script.Parent.TextValue.Value
            sg[i].TextLabel.MouseLeave:connect(function()
                game.Players.LocalPlayer.PlayerGui.MouseText.NewMouse.Visible = false
            end)
        end)
    end
end

I have also a GUI and TextValue. and some more SurfaceGUI but still not works, Anyone help?