Android: load RoomDatabase through DexClassLoader

I have two APKs. First APK is a main APK which loads second APK. In the second APK I have next code:

@Entity
public class RequestEntity {
    @PrimaryKey
    @NonNull
    public String uid;

    @ColumnInfo(name = "bucketName")
    public String bucketName;

    @ColumnInfo(name = "key")
    public String key;

    @ColumnInfo(name = "stream")
    public byte[] stream;

    @ColumnInfo(name = "metadata")
    public byte[] metadata;

    public RequestEntity(String bucketName, String key, byte[] stream, byte[] metadata) {
        this.uid = bucketName + key;
        this.bucketName = bucketName;
        this.key = key;
        this.stream = stream;
        this.metadata = metadata;
    }
}

@Dao
public interface RequestDao {
    @Query("SELECT * FROM requestEntity")
    List<RequestEntity> getAll();

    @Query("SELECT * FROM requestEntity WHERE uid IN (:requestIds)")
    List<RequestEntity> loadAllByIds(int[] requestIds);

    @Insert
    void insert(RequestEntity requestEntitie);

    @Insert
    void insertAll(RequestEntity... requestEntities);

    @Delete
    void delete(RequestEntity user);
}

@Database(entities = {RequestEntity.class}, version = 2, exportSchema = false)
public abstract class AppDatabase extends RoomDatabase {
    public abstract RequestDao requestDao();
}

My problem is when I call this line in the second APK:

db = Room.databaseBuilder(context, AppDatabase.class, "database-name").build();

I get exception:

java.lang.RuntimeException: cannot find implementation for [my package name].AppDatabase. AppDatabase_Impl does not exist

If I copy my code to main APK and call to this line from main APK, everything OK.