Background message handling doesn't work

[NaviWojciech]

Hello!

I use:

  firebase_messaging: ^8.0.0-dev.14
  firebase_core: ^0.7.0

I try to add handling of background messages to my app. This is a snippet from the code:

    FirebaseMessaging.onBackgroundMessage(
      (message) => _handleBackgroundMessage(
          message,
          widget.handler?.onBackgroundMessage,
          NotificationType.backgroundMessage),
    );

where:

Future<void> _handleBackgroundMessage(
  RemoteMessage message,
  MessageListener listener,
  NotificationType type,
) async {
  print("HANDLE MESSAGE");
}

it is a top-level function.

However, when I try to handle background notification, the following message is logged:
W/FLTFireMsgService(28069): A background message could not be handled in Dart as no onBackgroundMessage handler has been registered.

Am I missing anything there?

[NaviWojciech]

Hello! Any ideas?

[Anan-Saadi]

did you find any solution? I am facing the same issue