How do I change a TextLabel Text into a AudioName (Part2)?

So I got this down

textButton.MouseButton1Click:Connect(function()
	print("Click")
	local songs,text = results()
	local sound = DjBoard:WaitForChild("Board"):WaitForChild("Sound")
	if textBox.Text ~= ""   and textBox.Text ~= "Enter in ID"  then
		--print("enter")
		if  DjBoard:WaitForChild("Board"):WaitForChild("Sound").TimeLength == 0  and not songs  then
			print("not playing, added sound")
		local sound = DjBoard:WaitForChild("Board"):WaitForChild("Sound")
				sound.SoundId =  "rbxassetid://" .. textBox.Text
				sound:Play()
		local songName = game:GetService('MarketplaceService'):GetProductInfo( tonumber(sound) ).Name
			nowPlaying.Text = "" .. songName
		-- tonumber(sound) ).Name is line 33

But, I'm getting this

--19:26:56.487 - Argument 1 missing or nil
--19:26:56.487 - Stack Begin
--19:26:56.488 - Script 'Players.Player1.PlayerGui.ScreenGui.ClickEvents', Line 33
--19:26:56.488 - Stack End

What is the issue and what changes are supposed to be made?