Data is null from Firestore when only Fetching (read), Provider

I am facing the Issue, The result only show's "Empty" in the UI, I can't figure out the solution. I am using Provider as Statemangment. Firebase as backend.

I am only performing a simple action of just fetching the data.

here is the service code

Stream<List<CategoryModel>> getCateogoriesFromFirebase() {
  final categoryCollection =
      fireStoreInstance.collection('categories').snapshots();

  return categoryCollection.map((querySnapshots) {
    var categories = <CategoryModel>[];

    for (var singleCate in querySnapshots.docs) {
      CategoryModel categoryModel = CategoryModel.fromFirebase(singleCate);

      categories.add(categoryModel);
    }

    return categories;
  });
}

here is the controller part code

Stream<List<CategoryModel>> getCategoriesFiresotre() {
  return _dataBaseService.getCateogoriesFromFirebase();
}

here is the view code

SizedBox(

  height: 72,
  child: StreamBuilder(
      stream: Provider.of<HomeController>(
        context,
      ).getCategoriesFiresotre(),
      builder: (context, snapsshot) {
        if (snapsshot.data?.length == 0) {
          return Text('empty');
        }

        if (snapsshot.data != null) {
          return ListView.builder(
              shrinkWrap: true,
              physics: const BouncingScrollPhysics(),
              scrollDirection: Axis.horizontal,
              itemCount: snapsshot.data?.length,
              itemBuilder: (c, i) {
                return Container(
                  margin: const EdgeInsets.all(5),
                  height: 50,
                  width: 100,
                  color: Colors.blueGrey,
                  child: Center(
                    child: Text(
                        snapsshot.data?[i].category ?? 'Category'),
                  ),
                );
              });
        }
        return CircularProgressIndicator();
      }),
),

The output, In the UI is only the Text widget "Empty"
I have checked the Firestore rules, They are all up to date.

My older Brother fixed the Problem. He was able to figure out the problem, which wasn't in the code rather than inside Firestore. I miss typed and wrote categories instead of categories. I gave an extra space at the end causing the issue. Good luck Coding devs.