Providerが見つからないエラー【Flutter】

Question

Flutterにて、Firestoreに値を追加していた際、
正しいProviderが見つからないエラーが出てしまいました。

Error: Could not find the correct Provider<BookListModel> above this Consumer<BookListModel> Widget

解決策を教えて頂けると嬉しいです。

---

import 'package:flutter/material.dart';
import 'package:flutter1/book/add/add_book.dart';
import 'book_list_model.dart';
import 'package:provider/provider.dart';

class BookList extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider<BookListModel>(
      create: (_) => BookListModel()..fetchBooks(),
      child: Scaffold(
        appBar: AppBar(
          title: Text('Firebase Test'),
          backgroundColor: Colors.purple,
          centerTitle: true,
        ),
        body: Consumer<BookListModel>(builder: (context, model, child) {
          final books = model.books;
          final listTiles =
              books.map((book) => ListTile(title: Text(book.title))).toList();
          return ListView(
            children: listTiles,
          );
        }),
        floatingActionButton: FloatingActionButton(
          onPressed: () async{
            await Navigator.push(
              context,
              MaterialPageRoute(
                builder: (context) => AddBookPage(),
                fullscreenDialog: true
              ),
            );
          },
          child: Icon(Icons.add),
          shape:
              BeveledRectangleBorder(borderRadius: BorderRadius.circular(30)),
          backgroundColor: Colors.purple,
        ),
      ),
    );
  }
}

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:flutter/material.dart';
import 'book.dart';

class BookListModel extends ChangeNotifier {
  List<Book> books = [];

  Future<void> fetchBooks() async {
    final docs = await Firestore.instance.collection('books').getDocuments();
    final books = docs.documents.map((doc) => Book(doc['title'])).toList();
    this.books = books;
    notifyListeners();
  }
}

class Book {
  String title;

  Book(this.title);
}

---

エラー全文です????

Error: Could not find the correct Provider<BookListModel> above this Consumer<BookListModel> Widget

This likely happens because you used a `BuildContext` that does not include the provider
of your choice. There are a few common scenarios:

- The provider you are trying to read is in a different route.

  Providers are "scoped". So if you insert of provider inside a route, then
  other routes will not be able to access that provider.

- You used a `BuildContext` that is an ancestor of the provider you are trying to read.

Answer 1

add_book.dart > body: Consumerの型を＜AddBookModel＞ にしていませんでした。。
気を付けます。