java.lang.NullPointerException null object reference in Fragment

[naijab]

java.lang.NullPointerException: Attempt to invoke virtual method 'io.realm.RealmQuery io.realm.Realm.where(java.lang.Class)' on a null object reference

I use in fragment

private void GetNewsRealm(){
        mRealmRecyclerView = (RealmRecyclerView) rootView.findViewById(R.id.recycler_view_fav_fragment);

        RealmResults<NewsRealmModel> mRealmResult = realm.where(NewsRealmModel.class)
                .findAllSorted("RealmNewsID", Sort.ASCENDING);
        FavRealmAdapter mFavRealmAdapter = new FavRealmAdapter(getActivity(), mRealmResult, true, true);
        mRealmRecyclerView.setAdapter(mFavRealmAdapter);
}

Realm V.3

Please help me