Nitrite/flutter: Exporter errors

[381outrageousDoors]

Hello, I'm trying to export my database and keep getting the error below. What should I do?

flutter: Invalid argument(s): Illegal argument in isolate message: object is unsendable - Library:'dart:async' Class: _Future@4048458 (see restrictions listed at `SendPort.send()` documentation for more information)
flutter:  <- Instance of '_AsyncBroadcastStreamController<dynamic>' (from dart:async)
flutter:  <- _streamController in Instance of 'EventBus' (from package:event_bus/event_bus.dart)
flutter:  <- _isDropped in Instance of '_DefaultNitriteCollection' (from package:nitrite/src/collection/collection_factory.dart)
flutter:  <- _nitriteConfig in Instance of '_DefaultObjectRepository<ToDo>' (from package:nitrite/src/repository/repository_factory.dart)

Code example:

    await nitrite.closeDatabase();
    final projectDirectory = await getProjectFolder();
    final backUpDirectory = await Directory('${projectDirectory.path}'
            '${Platform.pathSeparator}backup'
            '${Platform.pathSeparator}db')
        .create(recursive: true);

    final exporter = Exporter.withOptions(
      dbFactory: () async {
        return nitrite.openCreateDatabase(dbDirectory);
      },
    );

    final exportedFilePath =
        '${backUpDirectory.path}${Platform.pathSeparator}exportedDB-test.json';

    await exporter.exportTo(exportedFilePath);

    return exportedFilePath;

If I don't close the db, I get the below error instead. Don't know if that helps

flutter: Invalid argument(s): Illegal argument in isolate message: object is unsendable - Library:'dart:async' Class: _Future@4048458 (see restrictions listed at `SendPort.send()` documentation for more information)
flutter:  <- _writeTask in Instance of 'ReadWriteSync' (from package:hive/src/backend/vm/read_write_sync.dart)
flutter:  <- _sync in Instance of 'StorageBackendVm' (from package:hive/src/backend/vm/storage_backend_vm.dart)
flutter:  <- Instance of 'LazyBoxImpl<dynamic>' (from package:hive/src/box/lazy_box_impl.dart)
flutter:  <- value in Instance of '_HashMapEntry' (from dart:collection)
flutter:  <- _List len:16 (from dart:core)
flutter:  <- _buckets in Instance of '_HashMap<String, BoxBaseImpl<dynamic>>' (from dart:collection)
flutter:  <- _boxes in Instance of 'HiveImpl' (from package:hive/src/hive_impl.dart)

openCreateDatabase is pretty standard:

    final storeModule = HiveModule.withConfig().path(dbDirectory.path).build();

    db = await Nitrite.builder()
        .registerEntityConverter(Converter())
        .loadModule(storeModule)
        .openOrCreate();

    db.checkOpened();
    return db;

[anidotnet]

Before exporting you need to close the db properly. After exporting also you need to close the db. As the export happens in a separate isolate and as the db is not sendable, you need to follow this ceremony.

[381outrageousDoors]

I get the same response after adding the close():

await exporter.exportTo(exportedFilePath);
await nitrite.closeDatabase();
return exportedFilePath;