How does PreloadAsync work on Animations?

Help and Feedback Scripting Support
#1

So I made a script that preloads animations, idk maybe I did it wrong but could someone explain how this works, and why it’s always failing?

local CP = game:GetService("ContentProvider")
local assets = {
	"rbxassetid://5625416615",
}
local Player = game.Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:Wait()

if Character.Parent == nil then Character.AncestryChanged:Wait() end
repeat wait() until Player.Character
local Humanoid = Character:WaitForChild("Humanoid")

function loadAnimation(contentId, Status)
	local Animation = Instance.new("Animation")
	Animation.AnimationId = contentId
	Animation:Destroy()
	local Track = Humanoid:LoadAnimation(Animation)
	Track:Play()
	Track:Stop()
	if Status == Enum.AssetFetchStatus.Failure then
		print(contentId, "Failure")
	elseif Status == Enum.AssetFetchStatus.Success then
		print(contentId, "Success")
	end
end

CP:PreloadAsync(assets, loadAnimation)
Tween does not play the first time, but plays every time afterwards
#2

The first parameter in PreloadAsync must be a table of Instances that have an asset id (Decals, Textures, Sounds, Animations, MeshParts, etc.).

local ContentProvider = game:GetService("ContentProvider")

local assets = {
	"rbxassetid://5625416615",
}

for index, assetId in pairs(assets) do
	local animation = Instance.new("Animation")
	animation.AnimationId = assetId

	assets[index] = animation -- Replace the asset string with the Animation Instance
end

function callback(contentId, status)
	if status == Enum.AssetFetchStatus.Failure then
		print(contentId, "Failure")
	elseif status == Enum.AssetFetchStatus.Success then
		print(contentId, "Success")
	end
end

ContentProvider:PreloadAsync(
	assets, -- Table of instances to load
	callback -- Callback function
)