How fix this maybe outdated script that does not work anymore?

I don't know what happened but the scrip stopped working, please help, and if you are wondering how I don't know to fix it, I am a starting coder.

local severStorage = game:GetService("ServerStorage")
local DataStore = game:GetService("DataStoreService"):GetDataStore("PlayerSave3")
--------------Stats--------------
game.Players.PlayerAdded:Connect(function(player)
	--------------leaderstats and dataFolder--------------
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player
	
	local dataFolder = Instance.new("Folder")
	dataFolder.Name = player.Name
	dataFolder.Parent = severStorage.RemoteData
	--------------DeathStats--------------
	local deaths = Instance.new("StringValue")
	deaths.Name = "Deaths"
	deaths.Value = DataStore:GetAsync(player.UserId).Deaths or "0"
	deaths.Parent = leaderstats
	
	player.CharacterAdded:Connect(function(char)
		local humanoid = char:FindFirstChild("Humanoid")
		humanoid.Died:Connect(function()
			wait(0.001)
			deaths.Value = deaths.Value + 1
		end)
	end)
	--------------TotalTimeStats--------------
	local TotalTime = Instance.new("StringValue")
	TotalTime.Name = "TotalTime"
	TotalTime.Parent = leaderstats
	TotalTime.Value = DataStore:GetAsync(player.UserId).TotalTime or "0"
	
	while true do 
		wait(1)
		TotalTime.Value = TotalTime.Value +1
	end
end)