java.lang.RuntimeException: android.app.Application does not implement dagger.android.HasActivityInjector

I am studying Dagger2 now. I am studying by looking at several examples. But there are some parts that aren't working properly, looking at the examples. I know that the structure of Dagger2 should be defined and implemented in the order of application -> active -> user component. However, an error occurred when following this. the message is java.lang.RuntimeException: android.app.Application does not implement dagger.android.HasActivityInjector The code is long, but I wish someone would show up to help me. I am very desperate.

` AppComponent

@Singleton @Component(modules = [AndroidSupportInjectionModule::class, ActivityBindingModule::class, ApplicationModule::class]) interface AppComponent : AndroidInjector {

@Component.Builder
interface Builder {
    @BindsInstance
    fun application(application: Application): Builder
    fun build(): AppComponent
}

} BaseApplication

class BaseApplication : DaggerApplication() { override fun applicationInjector(): AndroidInjector { return DaggerAppComponent.builder().application(this).build() } } ActivityScope

@Scope annotation class ActivityScope ActivityBindingModule

@Module abstract class ActivityBindingModule {

@ContributesAndroidInjector(modules = [MainModule::class])
abstract fun mainActivity(): MainActivity

} MainModule

@Module class MainModule { @ActivityScope @Provides fun util() : Utils = Utils()

} ApplicationModule

@Module class ApplicationModule { @Provides fun providesContext(application: Application): Context { return application } } Utils

class Utils { @Inject constructor(){ } fun add(a :Int, b:Int):Int= a+b fun sub(a :Int, b:Int):Int= a-b fun div(a :Int, b:Int):Int= a/b fun mul(a :Int, b:Int):Int= a*b

} MainActivity

class MainActivity : DaggerAppCompatActivity(), HasActivityInjector {

lateinit var utils : Utils

@Inject
lateinit var activityDispatchingAndroidInjector: DispatchingAndroidInjector<Activity>

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    var aa = utils.add(10,20)

    Log.d("TAG",""+aa)

}

override fun activityInjector(): AndroidInjector<Activity> {
    return activityDispatchingAndroidInjector
}

} `

google / dagger

java.lang.RuntimeException: android.app.Application does not implement dagger.android.HasActivityInjector #1708