LoadAnimation requires the Humanoid object to be a descendant of the game object (?)

ok this error has been coming up for soo long: LoadAnimation requires the Humanoid object (DragonSpawner12.Humanoid) to be a descendant of the game object

Here is my code:

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()
local humanoid = char:WaitForChild("Humanoid")

local anim = Instance.new("Animation")
anim.AnimationId = "rbxassetid://5595931188"
local animation = humanoid:LoadAnimation(anim)

I HAVE SEEN SO MANY ARTICLES NOT SOLVING THIS!

PLEASE Help me!

Edit: thanks for the inspiring comments

From the looks of it, this runs on a LocalScript, so it most likely loads much before the character. The code should work modified like this:

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()
local humanoid = char:WaitForChild("Humanoid")


local anim = Instance.new("Animation")
anim.AnimationId = "rbxassetid://5595931188"

player.CharacterAdded:Connect(function()
	local animation = humanoid:LoadAnimation(anim)
end)