What is wrong with my sword script?

In this sword script I made, I added an animation, but when I press f9 to activate the dev console, it says

Infinite yield possible on 'Workspace:WaitForChild("Humanoid")'

any way to fix this?

--//Variables
local tool = script.Parent.Parent
local handle = tool:WaitForChild("Handle")
local blade = tool:WaitForChild("Blade")
local config = tool:WaitForChild("Configuration")
local dmg = config:WaitForChild("Damage")
local cooldown = config:WaitForChild("CoolDown")
local ani = tool:WaitForChild("Animation")

tool.Equipped:connect(function(mouse)
	local Humanoid = tool.Parent:WaitForChild("Humanoid")
	local animation = Instance.new("Animation")
	animation.AnimationId = "http://www.roblox.com/Asset?ID=970463218"
	tool.Activated:connect(function()
		blade.Damage.Disabled = false
		local animTrack = Humanoid:LoadAnimation(animation)
		animTrack:Play()
		wait(cooldown.Value)
		blade.Damage.Disabled = true
	end)
end)