MVVM error handling volley

Support
1

Hello,
How to handle an error in volley?
For example I get an error from my api call, what would be the best way to let my fragment know that there is an error. So I don’t go to the next fragment per button click. Now I have a boolean, but I think there is a better option to let my fragment know that an error occurred.

ApiRepository
fun postName(name: String, id: String, callback: (Person) -> (Unit)) {
        val json = JSONObject(mapOf(
            "name" to name,
            "id" to id
        ))

        val req = JsonObjectRequest(Request.Method.POST, "https//example.com", json,
            {
                val person= Person(it.getString("name"), it.getString("id"), "")
                callback(person)
            },
            {
                val person= Person("", "", "", it.toString())
                callback(person)
            }
        )
        requestQueue.add(req)

DataClass
data class Person(val name: String, val id: String, val error: String)

MainViewModel
private val name: MutableLiveData<String> = MutableLiveData()
fun getName(): MutableLiveData<String> = name
fun createPerson(): Boolean {
        var isError: Boolean = false
        name.value?.let {
            apiRepository.postName(it, "1234") {
                if (it.error.isBlank()) {
                    id.value = it.id
                    name.value = it.name
                    personError.value = it.error
                }
                if (it.error.isNotBlank()){
                    personError.value = it.error
                    isError = true
                }
            }
        }
        return isError
    }

StartFragment
val btn: Button = binding.buttonStart
        btn.setOnClickListener {
            if (!mainViewModel.createPerson())
            {
                navController.navigate(R.id.action_StartFragment_to_PersonFragment)
            }
        }

Maybe someone has a better solution.
Zeppi