android で coroutines 内で例外が起きたときにエラーメッセージを表示したい

findNavController().navigate()

HogeDirection.toMoge()

findNavController().navigate()

HogeDirection.toMoge()

class HogeFragment : Fragment() {
    private lateinit var binding: HogeBinding
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        binding = HogeBinding.inflate(inflater)
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        binding.button.setOnClickListener {
            coroutineFunc()
        }
    }

    private fun coroutineFunc() =
        viewLifecycleOwner.lifecycleScope.launch(handler) {
            throw Exception("Fatal Exception!!")
        }

    private val handler = CoroutineExceptionHandler { _, e ->
        try {
            throw e
        } catch (e: Exception) {
            findNavController().navigate(HogeDirections.actionToErrorDialog(e.message))
        }
    }
}