How to solve HumanoidRootPart is not a valid member of Model?

I made a script witch should make players camera work like 2d game it works fine but once i die i get this error saying HumanoidRootPart is not a valid member of Model

local player = game.Players.LocalPlayer

local camera = workspace.CurrentCamera



player.CharacterAdded:Wait()

player.Character:WaitForChild("HumanoidRootPart")



camera.CameraSubject = player.Character.HumanoidRootPart

camera.CameraType = Enum.CameraType.Attach

camera.FieldOfView = 40



game:GetService('RunService').Stepped:Connect(function()

 camera.CFrame = CFrame.new(player.Character.HumanoidRootPart.Position) * CFrame.new(0,0,30)

end)

Just check if it exists before continuing. You don't want to use WaitForChild inside of a Stepped event. It's pointless. Change lines 21-25 to what I have below.

game:GetService('RunService').Stepped:Connect(function()	 
        if not player.Character or not player.Character:FindFirstChild("HumanoidRootPart") then return end
 	camera.CFrame = CFrame.new(player.Character.HumanoidRootPart.Position) * CFrame.new(0,0,30)	 
end)