[Resolved] Why doesn't the tool giver give the tool?

The script is supposed to put the pickaxe in the player's backpack when they touch the pickaxe giver. Unfortunately, when I testplay it, it gives this error at line 8:

Attempt to index nil with Backpack

The script:

local PickaxeGiver = script.Parent
local Pickaxe = game.ReplicatedStorage.GameItems:WaitForChild("Pickaxe")
local ClonedPick = game.ReplicatedStorage.GameItems.Pickaxe:Clone()

PickaxeGiver.Touched:Connect(function(hit, plr)
	if hit.Parent:FindFirstChild("Humanoid") then
		print("Check Works")
		if Pickaxe.Parent ~= plr.Backpack then
			print("Tool Check Works")
			ClonedPick.Parent = plr.Backpack
			print("Give Tool Works")
		end
	end
end)

I've looked at other posts to no avail. I've tried splitting the function into two separate functions and running it then. Tips would be appreciated since I'm relatively new scripter.