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ERRORS in flutter

The argument type 'String?' can't be assigned to the parameter type 'String'.dartargument_type_not_assignable​

caution

Solution: Add a null check ! at the end of that particular String

class BookDetails extends StatelessWidget {
  const BookDetails({
    Key? key,
    required this.currentBook,
  }) : super(key: key);

  final Map<String, String> currentBook;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
          title: Text(currentBook['bookTitle']), ❌❌❌❌❌❌  // The argument type 'String?' can't be assigned to the parameter type 'String'  ... `dartargument_type_not_assignable`
          title: Text(currentBook['bookTitle']!), /// NULL CHECK Operator `!`  ✅✅✅✅

          ),
    );
  }
}