HILT : 在ViewModel中，lateinit属性库没有被初始化

我在使用HILT的多模块安卓项目中面临这个问题。

 kotlin.UninitializedPropertyAccessException: lateinit property repository has not been initialized in MyViewModel
我的模块是
App Module
Viewmodel module
UseCase Module
DataSource Module
'应用模块'。
@AndroidEntryPoint
class MainFragment : Fragment() {
private lateinit var viewModel: MainViewModel
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
                          savedInstanceState: Bundle?): View {
    return inflater.inflate(R.layout.main_fragment, container, false)
override fun onActivityCreated(savedInstanceState: Bundle?) {
    super.onActivityCreated(savedInstanceState)
    viewModel = ViewModelProviders.of(this).get(MainViewModel::class.java)
    viewModel.test()
'ViewModel Module'
class MainViewModel @ViewModelInject constructor(private val repository: MyUsecase): ViewModel() {
fun test(){
    repository.test()
'UseCase模块'
class MyUsecase @Inject constructor() {
@Inject
lateinit var feature: Feature
fun doThing() {
    feature.doThing()
@Module
@InstallIn(ApplicationComponent::class)
object FeatureModule {
    @Provides
    fun feature(realFeature: RealFeature): Feature = realFeature
'数据源模块'
interface Feature {
fun doThing()
class RealFeature : Feature {
override fun doThing() {
    Log.v("Feature", "Doing the thing!")
MyFragment ---> MyViewModel ---> MyUseCase ---> DataSource
我做错了什么，请纠正。