Unable to regen tycoon for player who leaves?

I have a tycoon game where I am trying to get it set up so that when a player leaves the game, the old tycoon is deleted and it is replaced with a brand new one so that a new player can join the game and purchase that tycoon. However, when I run the game I get an error in the output that states:

21: attempt to index nil with 'PlayerRemoving'

Here is my code:

currentPlayer = game:GetService("Players").LocalPlayer

factory = script.Parent.Factory
owner = script.Parent.Factory.ownerName

local clone = factory:Clone()

function regenFactory() --Function to destroy the factory and regenerate a new one in it's place.
	
	factory:Destroy()
	
	wait(0.5)
	
	factory = clone:Clone()
	
	factory.Parent = script.Parent
	owner = script.Parent.Factory.ownerName
	
end

currentPlayer.PlayerRemoving:Connect(function(player) --Function that tells the game when a player leaves, and if they leave, run the regenFactory function.
	
	regenFactory()
	
end)

Any help would be appreciated, thank you!