Problems with HumanoidDescription

Hello, I’m having some issues with changing the animations using the HumanoidDescription object. (Also, please let me know if this is the best way to actually change default animations mid-game)

The errors I’m getting are:

 16:24:57.220  Asset id 7576392587 should reference a Folder Instance named R15Anim  -  Studio
  16:24:57.221  Humanoid::ApplyDescription() Some requested assets were not available  -  Studio

code:

local module = {}

function module.execute()
	for _,player in pairs(game.Players:GetChildren()) do
		local humanoid = player.Character and player.Character:FindFirstChild("Humanoid")
		if humanoid then
			
			local descriptionClone = humanoid:GetAppliedDescription()
			descriptionClone.WalkAnimation = 7576392587
		
				humanoid:ApplyDescription(descriptionClone)
		
		end
	end
end

return module