@ -869,7 +869,7 @@ Import the `BookState` to the `app.module.ts` in the `src/app` folder and then a
```js
// ...
import { BookState } from './books/state/books.state'; //<== imported BookState ==>
import { BookState } from './books/state/book.state'; //<== imported BookState ==>
@NgModule({
imports: [