Error Handling Developer Product Purchase?

Here is my local script in a TextButton:

script.Parent.MouseButton1Click:Connect(function()
	local ms = game:GetService("MarketplaceService")
	local plr = game.Players.LocalPlayer
	ms:PromptProductPurchase(plr,979885055)
end)

Here is my script in workspace:

local MarketplaceService = game:GetService("MarketplaceService")
local DataStoreService = game:GetService("DataStoreService")
local Players = game:GetService("Players")

local purchaseHistoryStore = DataStoreService:GetDataStore("PurchaseHistory")

local productFunctions = {}
productFunctions[979885055] = function(receipt, player)
	player.Character.HumanoidRootPart.Position = workspace:FindFirstChild(tostring(player.leaderstats.Stage.Value))
	return true
end

local function processReceipt(receiptInfo)
 
	local playerProductKey = receiptInfo.PlayerId .. "_" .. receiptInfo.PurchaseId
	local purchased = false
	local success, errorMessage = pcall(function()
		purchased = purchaseHistoryStore:GetAsync(playerProductKey)
	end)

	if success and purchased then
		return Enum.ProductPurchaseDecision.PurchaseGranted
	elseif not success then
		error("Data store error:" .. errorMessage)
	end

	local player = Players:GetPlayerByUserId(receiptInfo.PlayerId)
	if not player then

		return Enum.ProductPurchaseDecision.NotProcessedYet
	end

	local handler = productFunctions[receiptInfo.ProductId]

	local success, result = pcall(handler, receiptInfo, player)
	if not success or not result then
		warn("Error occurred while processing a product purchase")
		print("\nProductId:", receiptInfo.ProductId)
		print("\nPlayer:", player)
		return Enum.ProductPurchaseDecision.NotProcessedYet
	end

	local success, errorMessage = pcall(function()
		purchaseHistoryStore:SetAsync(playerProductKey, true)
	end)
	if not success then
		error("Cannot save purchase data: " .. errorMessage)
	end

	return Enum.ProductPurchaseDecision.PurchaseGranted
end

MarketplaceService.ProcessReceipt = processReceipt

Here is the error in output: 16:02:22.670 - Error occurred while processing a product purchase

ProductId: 979885055

Player: PrismaticFruits

This is supposed to be a skip stage developer product for my obby. The stage value is in a Folder called leaderstats in the player.

Can someone please tell me what is wrong? Thanks in advance!