Two Leaderboards not working?

I want to have 2 leaderboards in my Roblox game. One which shows In-Game time (in seconds) and the second one which shows the number of deaths after clicking the join button.

I found 2 tutorials on youtube. Both of them work but when I enable the Number of deaths script, the In-Game Time script doesn't work.

This is the In-Game Time script I use:

function onPlayerEntered(newPlayer)
    local stats = Instance.new("IntValue")
    stats.Name = "leaderstats"
    local secs = Instance.new("IntValue")
    secs.Name = "Time"
    secs.Value = 0
    secs.Parent = stats

    stats.Parent = newPlayer
    while true do
        wait(1)
        secs.Value = secs.Value + 1
    end
end
game.Players.ChildAdded:connect(onPlayerEntered)

And this is the Number of deaths script I use:

game:GetService('Players').PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        character:WaitForChild("Humanoid").Died:connect(function()
            print(player.Name .. " has died!")
            player.leaderstats.Deaths.Value = player.leaderstats.Deaths.Value + 1
        end)
    end)
end)
game.Players.PlayerAdded:connect(function(player)
     local leaderstats = Instance.new("Model", player)
     leaderstats.Name = "leaderstats"
 end)
game.Players.PlayerAdded:connect(function(player)
     local leaderstats = Instance.new("Model", player)
     leaderstats.Name = "leaderstats"

     local score = Instance.new("IntValue", leaderstats)
     score.Name = "Deaths"
     score.Value = 0
 end)

Of course, I don't need to use any of these scripts, they can be changed.

I'm not a good scripter and I need help. Thank you in advance. :)