"Argument 1 missing or nil" from CashGiver script?

I was making a tycoon, and used a script that AlvinBlox made for the leaderboards and for a passive cash giver, as well as a base script from dutchdeveloper for the actual tycoon. I tried editing these scripts to make sure that they worked with each other, as they all called for different types of cash, and wouldn't actually give me the money I needed to purchase the items I can buy from the Tycoon.

local TycoonInfo = script.Parent:WaitForChild("TycoonInfo")
local OwnerValue = TycoonInfo:WaitForChild("Owner")
local Buttons = script.Parent:WaitForChild("Buttons")
local Purchases = script.Parent:WaitForChild("Purchases")

local Objects = {}

function validateHitByOwner(Hit)
	if Hit and Hit.Parent and Hit.Parent:FindFirstChild("Humanoid") then
		local Player = game.Players:GetPlayerFromCharacter(Hit.Parent)
		if Player and OwnerValue.Value==  Player then
			return true
		end
	end
	return false
end

for i,v in pairs(Buttons:GetChildren()) do
	local Object = Purchases:FindFirstChild(v.Object.Value)
	if Object then
		Objects[Object.Name] = Object:Clone()
		Object:Destroy()
		
		if v:FindFirstChild("Dependency") then
			coroutine.resume(coroutine.create(function()
				v.Button.Transparency = 1
				v.Button.BillboardGui.Enabled = false
				v.Button.CanCollide = false
				if Purchases:WaitForChild(v.Dependency.Value,90000) then
					v.Button.Transparency = 0
					v.Button.CanCollide = true
					v.Button.BillboardGui.Enabled = true
				end
			end))
		end
		local DB = false
		v.Button.Touched:Connect(function(Hit)
			if validateHitByOwner(Hit)then
				if DB == false then
					DB = true
					if v.Button.Transparency == 0 then
						local Purchased = DoPurchase(Hit,v,v.Price.Value,Objects[v.Object.Value])
						if Purchased then
							warn("Purchased")
						else
							warn("Can't purchase")
						end
					end
					DB = false
				end
			end
		end)
	end
end

function DoPurchase(Hit,Button,Cost,Object)
	if Hit and Hit.Parent and Hit.Parent:FindFirstChild("Humanoid") then
		local Player = game.Players:GetPlayerFromCharacter(Hit.Parent)
		if Player and OwnerValue.Value == Player then
			local CashValue = game.ServerStorage.PlayerCash:FindFirstChild(Player.Name)
			if CashValue then
				if CashValue.Value >= Cost then
					CashValue.Value = CashValue.Value - Cost
					Object.Parent = Purchases
					Button:Destroy()
					return true	
				end	
			end
		end
	end
	return false
end

This is the script I used for the tycoon.

function FindEmptyTycoon()
	for i,v in pairs(workspace.Tycoons:GetChildren()) do
		if v.TycoonInfo.Owner.Value == nil then
			return v
		end
	end
	return nil
end


game.Players.PlayerAdded:Connect(function(Player)
	local Tycoon = FindEmptyTycoon()
	Tycoon.TycoonInfo.Owner.Value = Player
	
	
	local stats = Instance.new("BoolValue",Player)
	stats.Name = "leaderstats"
	
	local Cash = Instance.new("IntValue",stats)
	Cash.Name = Player.Name
	Cash.Value = 0
	Cash.Parent = game.ServerStorage.PlayerCash
end)

This is the script I used for the leaderboard. The cash is supposed to be stored in an IntValue in a Folder in ServerStorage, however:

local amount = 2
local timedelay = 2.33
local currencyname = "Cash"
wait(1)
while true do
	wait(timedelay)
	for i,v in pairs(game.ServerStorage.PlayerCash:FindFirstChild()) do
		if v:FindFirstChild("leaderstats") and v then
			v.leaderstats[currencyname].Value = v.leaderstats[currencyname].Value + amount
		end
	end
end

This is the script I used for the passive cash giver for the object that gives me money. It originally said:

for i,v in pairs(game.Players:GetPlayers()) do

but it came up with the error "Cash is not a valid member of BoolValue", so I thought I'd change it to what it is now so it can call for the Cash stored in the PlayerCash folder mentioned earlier. Am I on the right track or is this all completely wrong?