[SOLVED] I have a very big bug breaking issue. Can only find the solution to this error?

The scripts that I have will be pretty long so bear with me (however, I will show you which section of the script is mainly important to this issue)

I am trying to make a data storage system in my module script. What I am trying to attempt is saving the players money, however, if I use a certain script, the game can't recognize the value of the money and I get an error message saying this: ServerScriptService.Components.Button:35: attempt to compare number <= nil (this error message applies to another module script btw)

The script below works fine for other things except for the money system: (look near the bottom of script)

local Players = game:GetService("Players")
local DataStoreService = game:GetService("DataStoreService")
local PlayerData = DataStoreService:GetDataStore("PlayerData")

local function LeaderboardSetup(value)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"

	local money = Instance.new("IntValue")
	money.Name = "Money"
	money.Value = value
	money.Parent = leaderstats
	return leaderstats
end

local function LoadData(player)
	local success, result = pcall(function()
		return PlayerData:GetAsync(player.UserId)
	end)
	if not success then
		warn(result)
	end
	return success, result
end

local function SaveData(player, data)
	local success, result = pcall(function()
		PlayerData:SetAsync(player.UserId, data)
	end)
	if not success then
		warn(result)
	end
	return success
end

local sessionData = {}

local playerAdded = Instance.new("BindableEvent")
local playerRemoving = Instance.new("BindableEvent")

local PlayerManager = {}

PlayerManager.PlayerAdded = playerAdded.Event
PlayerManager.PlayerRemoving = playerRemoving.Event

function PlayerManager.Start()
	for _, player in ipairs(Players:GetPlayers()) do
		coroutine.wrap(PlayerManager.OnPlayerAdded)(player)
	end
	
	Players.PlayerAdded:Connect(PlayerManager.OnPlayerAdded)
	Players.PlayerRemoving:Connect(PlayerManager.OnPlayerRemoving)
	
	game:BindToClose(PlayerManager.OnClose)
end

function PlayerManager.OnPlayerAdded(player)
	player.CharacterAdded:Connect(function(character)
		PlayerManager.OnCharacterAdded(player, character)
	end)
	
	local success, data = LoadData(player)
	sessionData[player.UserId] = success and data or {
		Money = 0,
		UnlockIds = {}
	}
	
	local leaderstats = LeaderboardSetup(PlayerManager.GetMoney(player))
	leaderstats.Parent = player
	
	playerAdded:Fire(player)
end

function PlayerManager.OnCharacterAdded(player, character)
	local humanoid = character:FindFirstChild("Humanoid")
	if humanoid then
		humanoid.Died:Connect(function()
			wait(3)
			player:LoadCharacter()
		end)
	end
end

function PlayerManager.GetMoney(player)
--vv HERES THE SCRIPT BEFORE THE CHANGE vv--
	local leaderstats = player:FindFirstChild("leaderstats")
	if leaderstats then
		local money = leaderstats:FindFirstChild("Money")
		if money then
			return money.Value
		end
	end	
	return 0
--^^ HERES THE SCRIPT BEFORE THE CHANGE ^^--
end

function PlayerManager.SetMoney(player, value)
	if value then
		sessionData[player.UserId].Money = value
		
		local leaderstats = player:FindFirstChild("leaderstats")
		if leaderstats then
			local money = leaderstats:FindFirstChild("Money")
			if money then
				money.Value = value
			end
		end		
	end
end

function PlayerManager.OnPlayerRemoving(player)
	SaveData(player, sessionData[player.UserId])
	playerRemoving:Fire(player)
end

function PlayerManager.OnClose()
	for _, player in ipairs(Players:GetPlayers()) do
		PlayerManager.OnPlayerAdded(player)
	end
end

return PlayerManager

However, the script below breaks the money system and can't recognize it: (look near the bottom of script again)

local Players = game:GetService("Players")
local DataStoreService = game:GetService("DataStoreService")
local PlayerData = DataStoreService:GetDataStore("PlayerData")

local function LeaderboardSetup(value)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"

	local money = Instance.new("IntValue")
	money.Name = "Money"
	money.Value = value
	money.Parent = leaderstats
	return leaderstats
end

local function LoadData(player)
	local success, result = pcall(function()
		return PlayerData:GetAsync(player.UserId)
	end)
	if not success then
		warn(result)
	end
	return success, result
end

local function SaveData(player, data)
	local success, result = pcall(function()
		PlayerData:SetAsync(player.UserId, data)
	end)
	if not success then
		warn(result)
	end
	return success
end

local sessionData = {}

local playerAdded = Instance.new("BindableEvent")
local playerRemoving = Instance.new("BindableEvent")

local PlayerManager = {}

PlayerManager.PlayerAdded = playerAdded.Event
PlayerManager.PlayerRemoving = playerRemoving.Event

function PlayerManager.Start()
	for _, player in ipairs(Players:GetPlayers()) do
		coroutine.wrap(PlayerManager.OnPlayerAdded)(player)
	end
	
	Players.PlayerAdded:Connect(PlayerManager.OnPlayerAdded)
	Players.PlayerRemoving:Connect(PlayerManager.OnPlayerRemoving)
	
	game:BindToClose(PlayerManager.OnClose)
end

function PlayerManager.OnPlayerAdded(player)
	player.CharacterAdded:Connect(function(character)
		PlayerManager.OnCharacterAdded(player, character)
	end)
	
	local success, data = LoadData(player)
	sessionData[player.UserId] = success and data or {
		Money = 0,
		UnlockIds = {}
	}
	
	local leaderstats = LeaderboardSetup(PlayerManager.GetMoney(player))
	leaderstats.Parent = player
	
	playerAdded:Fire(player)
end

function PlayerManager.OnCharacterAdded(player, character)
	local humanoid = character:FindFirstChild("Humanoid")
	if humanoid then
		humanoid.Died:Connect(function()
			wait(3)
			player:LoadCharacter()
		end)
	end
end

function PlayerManager.GetMoney(player)
--vv HERES THE SCRIPT THAT CHANGES AND BREAKS THE MONEY SYSTEM vv--
      return sessionData[player.UserId].Money
--^^HERES THE SCRIPT THAT CHANGES AND BREAKS THE MONEY SYSTEM^^--
end

function PlayerManager.SetMoney(player, value)
	if value then
		sessionData[player.UserId].Money = value
		
		local leaderstats = player:FindFirstChild("leaderstats")
		if leaderstats then
			local money = leaderstats:FindFirstChild("Money")
			if money then
				money.Value = value
			end
		end		
	end
end

function PlayerManager.OnPlayerRemoving(player)
	SaveData(player, sessionData[player.UserId])
	playerRemoving:Fire(player)
end

function PlayerManager.OnClose()
	for _, player in ipairs(Players:GetPlayers()) do
		PlayerManager.OnPlayerAdded(player)
	end
end

return PlayerManager

I'm really sorry if this is hard to follow through without much context, but any help would be extremely appreciated!

Sorry guys, I've figured it out. Just decided to work for some reason haha