Why must I backspace this tool for it to work?

I have a game pass in my game that gives you a tool, but it doesn't work unless you backspace it and pick it back up. Any way to fix this?

Error: Handle is not a valid member of Tool

No errors with Tool script

Once backspaced it works fine

local function WaitForChild(parent, childName)
	assert(parent, "ERROR: WaitForChild: parent is nil")
	while not parent:FindFirstChild(childName) do parent.ChildAdded:wait() end
	return parent[childName]
end
local GamePassService = game:GetService('GamePassService')
local PlayersService = game:GetService('Players')
local InsertService = game:GetService('InsertService')
local LightingService = game:GetService('Lighting')
local GamePassIdObject = WaitForChild(script, 'GamePassId')
local ToolAssetsToLoad = WaitForChild(script, 'ToolAssetsToLoad')
local AdminTools = LightingService:FindFirstChild('AdminTools')
local function CloneAdminTools(target)
	for _, tool in pairs(AdminTools:GetChildren()) do
		local toolClone = tool:Clone()
		toolClone.Parent = target
	end
end
local function OnPlayerAdded(player)
	if GamePassService:PlayerHasPass(player, GamePassIdObject.Value) then
		local starterGear = WaitForChild(player, 'StarterGear')
		CloneAdminTools(starterGear)
		if player.Character then
			local backpack = WaitForChild(player, 'Backpack')
			CloneAdminTools(backpack)
		end
	end
end
if not AdminTools then
	AdminTools = Instance.new('Model')
	AdminTools.Name = 'AdminTools'
	for _, intObject in pairs(ToolAssetsToLoad:GetChildren()) do
		if intObject and intObject:IsA('IntValue') and intObject.Value then
			local assetModel = InsertService:LoadAsset(intObject.Value)
			if assetModel then
				local asset = assetModel:GetChildren()[1]
				if asset then
					asset.Parent = AdminTools
				end
			end
		end
	end
	AdminTools.Parent = LightingService
end
PlayersService.PlayerAdded:connect(OnPlayerAdded)

Sorry mate, but that script is fine... It's the tool that is messed up.... Hope I saved you time.