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Can we add a null value to a StreamController? (Flutter, Dart)

I want to add a null value to a stream, but it will show an error. When I do: final StreamController<Car?> streamController = StreamController<Car?>.broadcast(); streamController.add(null) I'll get flutter: ┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── flutter: │ #0 _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:242:14) flutter: │ #1 CarService.selectCar (package:app/services/car_service.dart:109:39) flutter:…

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