Custom Character Broken, please help

I got a custom character to spawn, here’s how it actually looks
Screen Shot 2021-12-21 at 1.48.19 PM
I also got an animation for it, however, it doesn’t work.

But it looks differently on the game
Screen Shot 2021-12-21 at 1.50.26 PM

This is my animate script(followed a tutorial, should work just fine):

local character = script.Parent
local humanoid = character:WaitForChild("Humanoid")

local walkAnim = script:WaitForChild("Walk")
local walkAnimTrack = humanoid.Animator:LoadAnimation(walkAnim)

humanoid.Running:Connect(function(speed)
	if speed > 0 then
		if not walkAnimTrack.IsPlaying then
			walkAnimTrack:Play()
		end
	else
		if walkAnimTrack.IsPlaying then
			walkAnimTrack:Stop()
		end
	end
end)

I also get a HTTP 404 error on the AnimHandler, a script I think is on Roblox’s side.

Thanks!

The animation is made by you? I think that if the animation is from another user it doesn’t work.

The animation was made by me, yes

Could you please help? It still doesn’t work