java.lang.NullPointerException: Attempt to invoke virtual method 'android.os.Parcelable android.os.Bundle.getParcelable(java.lang.String)' on a null object reference

pofirebase
 |-> MessageList
   |-> -KNbPgKU-p_UHK9mp1nm
     |-> message: "hello world"
     |-> user: "User1"
   |-> -KNbPqh3nOHa8iKwNsDI
     |-> message: "hello world 2"
     |-> user: "User2"

public class MessageList extends BaseModel implements Parcelable {

String user;
String message;

public MessageList() {

}

public MessageList(String user, String message) {
    this.user = user;
    this.message = message;
}

protected MessageList(Parcel in) {
    user = in.readString();
    message = in.readString();
}

public static final Creator<MessageList> CREATOR = new Creator<MessageList>() {
    @Override
    public MessageList createFromParcel(Parcel in) {
        return new MessageList(in);
    }

    @Override
    public MessageList[] newArray(int size) {
        return new MessageList[size];
    }
};

public String getUser() {
    return user;
}

public String getMessage() {
    return message;
}

@Override
public String toString() {
    return "MessageList{" +
            "user='" + user + ''' +
            ", message='" + message + ''' +
            '}';
}


@Override
public int describeContents() {
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeString(user);
    dest.writeString(message);
}
}

public class MyRecycleAdapter extends FirebaseRecyclerAdapter<MessageList, MyRecycleAdapter.MyHolder> {

public MyRecycleAdapter(Class<MessageList> modelClass, int modelLayout, Class<MyRecycleAdapter.MyHolder> viewHolderClass, Query ref) {
    super(modelClass, modelLayout, viewHolderClass, ref);
}

public MyRecycleAdapter(Class<MessageList> modelClass, int modelLayout, Class<MyRecycleAdapter.MyHolder> viewHolderClass, DatabaseReference ref) {
    super(modelClass, modelLayout, viewHolderClass, ref);
}

@Override
protected void populateViewHolder(MyRecycleAdapter.MyHolder viewHolder, MessageList model, int position) {
    viewHolder.populate(model);
}

public class MyHolder extends RecyclerView.ViewHolder {
    TextView tvItemFirst;
    TextView tvItemSecond;

    public MyHolder(View itemView) {
        super(itemView);
        tvItemFirst = (TextView) itemView.findViewById(R.id.tvItemFirst);
        tvItemSecond = (TextView) itemView.findViewById(R.id.tvItemSecond);

    }
    public void populate(MessageList model){
        tvItemFirst.setText(model.getUser());
        tvItemSecond.setText(model.getMessage());
    }

}
 }

public class ListAdapterFragment extends Fragment {

RecyclerView rvFireBase;


public ListAdapterFragment() {
    // Required empty public constructor
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_list_adapter, container, false);

    rvFireBase = (RecyclerView) view.findViewById(R.id.rvFireBase);

    //1.) ref to list of data
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference messageList = database.getReference("MessageList");

    //2.) adapter
    MyRecycleAdapter adapter = new MyRecycleAdapter(MessageList.class,
            R.layout.list_view_layout,MyRecycleAdapter.MyHolder.class,messageList
    );

    rvFireBase.setAdapter(adapter);


    return view;

}