The non-nullable variable 'items' must be initialized. Try adding an initializer expression.

[codersangam]

I removed the first item which is added on catalog.dart . Logically if we see, it can be null so that we fetch data from network or json files. But after removing that first item. It shows an error. class CatalogModel { static List<Item> items; } Please review it once.

[maskeyp]

have you found the solution yet?

[codersangam]

Use Null Safety:static List<Item>? items;

[maskeyp]

Thankyou!!1 i have another problem though in catalog.dart ---code---

factory Item.fromMap(Map<String, dynamic> map) { if (map == null) return null;

return Item(
  id: map['id'],
  name: map['name'],
  desc: map['desc'],
  price: map['price'],
  color: map['color'],
  image: map['image'],
);

}

--------A value of type 'Null' can't be returned from the constructor 'Item.fromMap' because it has a return type of 'Item'.

[codersangam]

checkout here: https://github.com/codersangam/thirtydays_flutter

[maskeyp]

Thankyou !!