I'm trying to make food machines for a cafe, what is wrong with this script?

I want to make food machines. Here is my script:

game.Workspace.Cup.clicky.MouseClick:Connect(function(player)tool:Clone().Parent = player.Character end)

It says "attempted to put nil value" and the clicky thing is the ClickDetector so when I click the cup it's supposed to give me a cup. In the Output it said "attempt to index global 'tool' (nil value)"

I also have this script:

game.Workspace.Cup.clicky.MouseClick:Connect()

And then on the Cup tool, I have a Weld script:

local prev
local parts = script.Parent:GetChildren()
for i = 1, #parts do
	if ((parts[i].ClassName == "Part") or (parts[i].className == "Handle") or (parts[i].className == "WedgePart") or (parts[i].className == "WedgePart") or (parts[i].className =="Seat")or (parts[i].className == "WedgePart") or (parts[i].className == "TrussPart")or (parts[i].className == "VehicleSeat") or (parts[i].className =="UnionOperation") or (parts[i].className == "SkateboardPlatform")) then
		if (prev ~= nil) then
			local weld = Instance.new("Weld")
			weld.Part0 = prev
			weld.Part1 = parts[i]
			weld.C0 = prev.CFrame:inverse()
			weld.C1 = parts[i].CFra,e:inverse()
			weld.Parent = prev
			parts[i].Anchored = false
		end
		prev = parts[i]
	end
end
wait(3)

		

Please help if you find anything wrong, or want to help. Thank you.