I am facing this error: type 'Null' is not a subtype of type 'int'

When attempting to fetch areas from the area collection, the application throws an error: "type 'Null' is not a subtype of type 'int.'" This issue originates in the AreaModel.fromJson constructor, indicating that expected integer fields are receiving null values.

Environment:

Both the SDK and the self-hosted Appwrite server are running on the latest versions.

I encountered the same problem earlier in the day when fetching data from the server, which was resolved by downgrading the Appwrite SDK to version 16.1.0. However, again, this issue has emerged in the functionality related to fetching areas.

Any help would be appreciated!

TL;DR

Error: Type 'Null' is not a subtype of type 'int.' Issue arises from missing sequence in json when using Dart Appwrite package. Solution: Downgrade Flutter Appwrite to version 17.0.1 to handle null correctly.

Having the same issue after upgrading to "dart_appwrite: ^16.2.0" seems to be related to missing sequence in json.

factory Document.fromMap(Map<String, dynamic> map) { return Document( $id: map['id'].toString(), $sequence: map['sequence'], <--- $collectionId: map['collectionId'].toString(), $databaseId: map['databaseId'].toString(), $createdAt: map['createdAt'].toString(), $updatedAt: map['updatedAt'].toString(), $permissions: List.from(map['permissions'] ?? []), data: map, ); }