Why would this script not work?

The leaderstats are working, it is this part of the script that is not:

local Humanoid = script.Parent.Zombie -- Or Zombie Or Whatever 
function PwntX_X() 
	print("1")
local tag = Humanoid:findFirstChild("creator")
print("2") 
if tag ~= nil then 
		print("3")
		if tag.Value ~= nil then 
			print("4")
	
local Leaderstats = tag.Value:findFirstChild("leaderstats") 
print("5")
			if Leaderstats ~= nil then 
				print("6")
Leaderstats.Cash.Value = Leaderstats.Cash.Value + 5
print("7")
wait(0.1)
script:remove()
			end 
		end 
	end 
end 
Humanoid.Died:connect(PwntX_X) 

It breaks between print("2") and print("3").

Sorry if this comes off a bit like a smart ass but it has to be said. It's not findFirstChild because findFirstChild IS DEPRECATED use FindFirstChild instead. NEVER USE DEPRECATED FUNCTIONS

Anways to answer your question you did script.Parent.Zombie if zombie is the name of a Humanoid object this should stay however if it isn't it should be script.Parent.Zombie.Humanoid