"No Retrofit annotation found. (parameter #2)" kotlin error

Support
1

I have a problem with “No Retrofit annotation found. (parameter #2)”, when calling the POST method in android api service. At the beginning, maybe I will present what I want to get and then the code.

I wanted to use the POST method to upload the object to the server from kotlin but when I call the function, I get the problem that I mentioned earlier. What can I do to fix this?

Some code

Repo:

suspend fun addMonument(monuments: Monuments){

    withContext(Dispatchers.IO) {
        try {
            CityVisitorApi.RETROFIT_SERVICE.addMonument(monuments)
        } catch (e: Exception) {
            Log.e("network", e.message)
        }
    }
}

Service:

private const val BASE_URL = "http://192.168.0.43:8080/api/v1/"
interface CityVisitorApiService {
    @Headers("Content-Type: application/json")
    @POST("monuments/add")
    suspend fun addMonument(@Body monuments: Monuments)

}
private val moshi = Moshi.Builder()
        .add(KotlinJsonAdapterFactory())
        .build()

private val retrofit = Retrofit.Builder()
        .addConverterFactory(MoshiConverterFactory.create(moshi))
        .addCallAdapterFactory(CoroutineCallAdapterFactory())
        .baseUrl(BASE_URL)
        .build()

object CityVisitorApi {
    val RETROFIT_SERVICE : CityVisitorApiService by lazy { retrofit.create(CityVisitorApiService::class.java) }
}

creator:

class MonumentCreator {
var name = ""
var description = ""
var category = ""
var url = ""
var rate = 0.0f
var lat = 0.0
var lng = 0.0


fun createMonument() : Monuments{
    return Monuments(
        name = name,
        info = description,
        category = category,
        website = url,
        rate = rate,
        geo = LatLong(lat,lng)
    )
}

}

viewModel:

 private val repository = MonumentsRepository(CityVisitorApi.RETROFIT_SERVICE)

var monumentCreator = MonumentCreator()

fun addMonument() {
    viewModelScope.launch {
        name.value?.let { monumentCreator.name = it }
        description.value?.let { monumentCreator.description = it }
        category.value?.let { monumentCreator.category = it }
        url.value?.let { monumentCreator.url = it }
        rate.value?.let { monumentCreator.rate = it.toFloat() }
        lat.value?.let { monumentCreator.lat = it.toDouble() }
        lng.value?.let { monumentCreator.lng = it.toDouble() }
        val monuments = monumentCreator.createMonument()

        repository.addMonument(monuments)
    }
}

And at the back-end server POST method that I want to call from kotlin:

@PostMapping(path = "/add")
public void addNewMonument(@RequestBody MonumentDTO monument){
    monumentService.addNewMonument(converter.dtoToEntity(monument));
}

I don’t know if it has anything to do with it, but the same error shows up even when the server is not running.