Unable To Cast Value To Object

--//Services & Instances

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ServerScriptService = game:GetService("ServerScriptService")


local Events = ReplicatedStorage:WaitForChild("events")
local On_Combat = Events:WaitForChild("on_combat")

--//Variables

local List = {
	'rbxassetid://13366667405'
}

--// Functions

local function onRegisterOnMouse(Player)
	
	local Character = Player.Character or Player.CharacterAdded:Wait()
	local Humanoid = Character:WaitForChild("Humanoid")
	
	Humanoid:LoadAnimation(13366667405):Play()
	
end

On_Combat.OnServerEvent:Connect(onRegisterOnMouse)

First off.
Where is the error? Which line?
Second off
More context please?

Sorry if that sounds harsh

:LoadAnimation takes in an Animation object, not the AnimationId itself. Lookup the script example given in the API documentation Animator | Roblox Creator Documentation.

Furthermore, Humanoid:LoadAnimation is deprecated, use Humanoid.Animator:LoadAnimation