"Unable to cast value to Object" error datastore. How to fix it?

hello, im trying to make a datastore for my game, but the datastore doesn't work and it shows " Unable to cast value to Object" error in output.

Code (ServerScript)

local DataStoreService = game:GetService("DataStoreService")
local key = "ComputerSimulatorTestingPhase2.0.1"
local myDataStore = DataStoreService:GetDataStore(key)

game.Players.PlayerAdded:connect(function(player)
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player

	local coins = Instance.new("IntValue") --Change points to whatever you want, unless you want to keep it
	coins.Name = "Coins" --Name of the Points, or whatever name you changed it to
	coins.Parent = leaderstats

	local gems = Instance.new("IntValue") --Change wins to whatever you want, unless you want to keep it
	gems.Name = "Gems" --Name of the Wins, or whatever name you changed it to
	gems.Parent = leaderstats

	local pcs = Instance.new("IntValue")
	pcs.Name = "PCs"
	pcs.Parent = leaderstats

	local maxpcs = Instance.new("NumberValue")
	maxpcs.Name = "MaxPCs"
	maxpcs.Parent = leaderstats
	maxpcs.Value = 10

	local MaxPCsUpgrade = Instance.new("Folder")
	MaxPCsUpgrade.Name = "MaxPCsUpgrade"
	MaxPCsUpgrade.Parent = player

	local newmaxpcs = Instance.new("NumberValue")
	newmaxpcs.Name = "NewMaxPCs"
	newmaxpcs.Value = 10
	newmaxpcs.Parent = MaxPCsUpgrade

	local boxes = Instance.new("NumberValue")
	boxes.Name = "Boxes"
	boxes.Value = 0
	boxes.Parent = leaderstats
	
	local data
	local success, errormessage = pcall(function()
		data = myDataStore:GetAsync(player.UserId.."-coins", player.UserId.."-gems", player.UserId.."-pcs", player.UserId.."-maxpcs", player.UserId.."-boxes")
	end)
	
	if success then
		coins.Value = data
		wait(0.5)
		gems.Value = data
		wait(0.5)
		pcs.Value = data
		wait(0.5)
		maxpcs.Value = data
		wait(0.5)
		boxes.Value = data
		
		print("data loaded")
	else
		warn(errormessage)
		player:Kick(errormessage)
	end
end)

game.Players.PlayerRemoving:Connect(function(player)
	
	local success, errormessage = pcall(function()
		myDataStore:SetAsync(player.UserId.."-coins", player.leaderstats.Coins.Value, player.UserId.."-gems", player.leaderstats.Gems.Value, player.UserId.."-pcs", player.leaderstats.PCs.Value, player.UserId.."maxpcs", player.leaderstats.MaxPCs.Value, player.UserId.."-boxes", player.leaderstats.Boxes.Value)
	end)
	
	if success then
		print("Data saved")
	else
		print("An error occured while saving data")
		warn(errormessage)
		player:Kick(errormessage)
	end
end)