Inheritance from an interface with '@JvmDefault' members is only allowed with -Xjvm-default option

related_url.txt

https://stackoverflow.com/a/72737672/6289448

https://stackoverflow.com/a/70993001/6289448

https://issuetracker.google.com/issues/217593040

solution.gradle

android {
  kotlinOptions {
    //freeCompilerArgs +=  "-Xjvm-default=all"
    // or
    freeCompilerArgs += [
        "-Xjvm-default=all",
    ]
  }
}

why.md

Factory implementation before 2.5.0:

public interface Factory {
        /**
         * Creates a new instance of the given {@code Class}.
         * <p>
         *
         * @param modelClass a {@code Class} whose instance is requested
         * @param <T>        The type parameter for the ViewModel.
         * @return a newly created ViewModel
         */
        @NonNull
        <T extends ViewModel> T create(@NonNull Class<T> modelClass);
    }

Note one method, create, without implementation.

Here is the rewrite they did in 2.5.0

public interface Factory {
        /**
         * Creates a new instance of the given `Class`.
         *
         * Default implementation throws [UnsupportedOperationException].
         *
         * @param modelClass a `Class` whose instance is requested
         * @return a newly created ViewModel
         */
        public fun <T : ViewModel> create(modelClass: Class<T>): T {
            throw UnsupportedOperationException(
                "Factory.create(String) is unsupported.  This Factory requires " +
                    "`CreationExtras` to be passed into `create` method."
            )
        }

        /**
         * Creates a new instance of the given `Class`.
         *
         * @param modelClass a `Class` whose instance is requested
         * @param extras an additional information for this creation request
         * @return a newly created ViewModel
         */
        public fun <T : ViewModel> create(modelClass: Class<T>, extras: CreationExtras): T =
            create(modelClass)

       
          ...
        }

So that explains it, this interface is now a default implementation interface, and to inherit from it, need to add the compiler args, as suggested by the compiler (freeCompilerArgs += "-Xjvm-default=all").