How to solve UserInputService?

I was running a simple piece of code and i came upon a error, outputs not giving me anything

local UserInputService = game:GetService("UserInputService")

local aKeyPressed = false

UserInputService.InputBegan:Connect(function(input, gameProccesed)
	if input.KeyCode == Enum.KeyCode.A then
		aKeyPressed = true
		
		while aKeyPressed == true do
			wait()
			print("A Key is being held")
		end
	end
end)

UserInputService.InputEnded:Connect(function(input, gameProccesed)
	if input.KeyCode == Enum.KeyCode.A then
		aKeyPressed = false
	end
end)