leaderstats is not a valid member of players?

For some reason I keep getting this error. I have tried checking to see if there are any typos but there are none. This is also on a normal script. I need help, thanks.

game.Players.PlayerAdded:Connect(function(Player)
    Player.CharacterAdded:Connect(function()

        local leaderstats = game:GetService("Players").leaderstats.Stage.Value

        if leaderstats >= 40 then
            local Halo = game.ServerStorage.RainbowHalo:Clone()
            Halo.Parent = Player.Character
        end
    end)
end)