LoadAnimation requires the Humanoid object to be descendant of the game object?

error : LoadAnimation requires the Humanoid object to be descendant of the game object

local Players = game:GetService("Players")
Players.PlayerAdded:Connect(function(Plr)
Plr.CharacterAdded:Connect(
    function(char)
        print(char)
        local Hum = char:WaitForChild("Humanoid")
        print(Hum)
        Hum:SetStateEnabled(Enum.HumanoidStateType.Dead, false)

        DeathAnim = Hum:LoadAnimation(script.Parent.Reset)

        Hum.HealthChanged:Connect(
            function()
                if Hum.Health <= 0 then
                    DeathAnim:Play()
                end
            end
        )

        DeathAnim.Stopped:Connect(
            function()
                Hum.Health = 0
                Hum:SetStateEnabled(Enum.HumanoidStateType.Dead, true)
            end
        )
end)
end)

Gives error. Char > my username char.Parent > nil how to wait for character happen in workspace dont know, wait() on start somehow stops script

EDIT : you need to wait for character to appear in workspace, char.Parent is nil so humanoid isn't in game object, cant load animation, how to fix that idk