Dagger: MissingBinding Error

[reactivedroid]

While trying to build with the MVVM arch with ViewModelFactory using dagger multibinding, the build fails:

error: [Dagger/MissingBinding] java.util.Map<java.lang.Class<? extends androidx.lifecycle.ViewModel>,? extends javax.inject.Provider<androidx.lifecycle.ViewModel>> cannot be provided without an @Provides-annotated method.
public abstract interface AppComponent {
      java.util.Map<java.lang.Class<? extends androidx.lifecycle.ViewModel>,? extends javax.inject.Provider<androidx.lifecycle.ViewModel>> is injected at

The ViewModelKey used :

@Target(
    AnnotationTarget.FUNCTION,
    AnnotationTarget.PROPERTY_GETTER,
    AnnotationTarget.PROPERTY_SETTER
)
@Retention(AnnotationRetention.RUNTIME)
@MapKey
annotation class ViewModelKey(val value: KClass<out ViewModel>)

Versions
Dagger:2.23.2
Kotlin:1.3.40

In fact, I tried following the solutions mentioned here #1478 by moving the ViewModelKey to java but it didn't work. Other fixes like downgrading versions also did not work. Also, pls note that I am using the latest versions of Kotlin and Dagger. Pls help if I am missing something
@ronshapiro

[reactivedroid]

Update
Converting both ViewModelKey and ViewModelFactory to java solved the problem. That means, the problem either exists with Dagger Annotation processing or KAPT

[reactivedroid]

Update 2: Looks like this was a typical problem of declaration-site variance from Kotlin to Java conversion. Adding @JvmSuppressWildcards solved the problem.
private val providers: Map<Class<out ViewModel>, @JvmSuppressWildcards Provider<ViewModel>>