What’s the proper way to handle null values in Flutter/Dart when parsing API responses into model classes so that I can avoid this error?

In Dart, you can receive nullable values by adding ? to the end of the variable such as:

String? , int? , File?

If the API returns null, Flutter should either accept it as null or use a fallback value instead of throwing this runtime error.

1. Receive it as null

   String? nullableString = map['name'];
   

2. Replace null with a fallback value

   String nullableString = map['name'] ?? "Fallback Value";