Humanoid:LoadAnimation(), the animation doesn't load?

Hi, I want to make a knife but my animation doesn't load.. Why and how to fix?

This is in a ClientScript put in a Tool

--< Services
local PlayerService = game:GetService('Players')
local UserInputService = game:GetService('UserInputService')

--< Variables
local ToolS = script
local Tool = ToolS.Parent

local Player = PlayerService.LocalPlayer

local IsEquip = false
local LastAnim = {}

--< Functions
local function FindAnimation(player)
	for index, animation in pairs(Tool.Handle.Slashs:GetChildren()) do
		if LastAnim[1] ~= animation then
			LastAnim[1] = animation
			return animation, Tool.Handle.Sounds:GetChildren()[math.random(1, #Tool.Handle.Sounds:GetChildren())]
		end
	end
end

--< Events
Tool.Equipped:Connect(function()
	IsEquip = true
end)

Tool.Unequipped:Connect(function()
	IsEquip = false
end)

UserInputService.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.MouseButton1 and IsEquip then
		local Anim, Sound = FindAnimation()
		if Anim then
			print(Anim.Name, Sound.Name)
			local AnimationTrack = Player.Character.Humanoid:LoadAnimation(Tool.Handle.Slashs[Anim.Name])
			AnimationTrack:Play()
			Sound:Play()
		end
	end
end)

Hi, I had the same problem but I got it fixed.

Who owns the game? You or a group? If it is you who owns the game, you must export the animation into YOUR profile. If it is a group that owns the game, the animation must be exported into THE GROUP. Roblox, for some reason, doesn't allow animations from another person in a game.