I am making this game and a script in my game is encountering errors, How do I fix this?

So, I was just trying to make a kill for money script for my game, I keep on encountering errors whenever I try using the code that I provided.

Here is the code I used

game.Players.PlayerAdded:connect(function(player)
	local folder = Instance.new("Folder",player)
	folder.Name = "leaderstats"
	local currency1 = Instance.new("IntValue",folder)
	currency1.name = "Cash"
	player.CharacterAdded:connect(function(character)
		character:WaitForChild("Humanoid").Died:connect(function()
			local tag = character.Humanoid:FindFirstChild("creator")
			if tag ~= nil then
				if tag.Value ~= nil then
					local stats = tag.Value:WaitForChild("leaderstats")
					stats["Cash"].Value = stats["Cash"].Value + 10
				end
			end
		end)
	end)
end)

Whenever I try killing an NPC or person, it just doesn't work. Can someone please help me?