Firebase FCM getToken() throws apns-token-not-set error

[stevenc1981]

This seems like a bug to me but wants some opinion from the experts.

On some iOS devices, user is getting this APNS token unavailable error when executing FirebaseMessaging.instance.getToken():

  [firebase_messaging/apns-token-not-set] APNS token has not been set yet. Please ensure the APNS token is available by calling `getAPNSToken()`.

  Fatal Exception: FlutterError
  0  App                            0x478967 MethodChannelFirebaseMessaging._APNSTokenCheck + 138 (method_channel_messaging.dart:138)
  1  App                            0x4787d3 MethodChannelFirebaseMessaging.getToken + 244 (method_channel_messaging.dart:244)
  2  App                            0x40c9c0 main.<anonymous closure> (#5) + 92 (main.dart:92)

Based on what I can see in the flutterfire code: https://github.com/firebase/flutterfire/blob/master/packages/firebase_messaging/firebase_messaging_platform_interface/lib/src/method_channel/method_channel_messaging.dart

It is calling _APNSTokenCheck() which calls getAPNSToken() anyways. Sure, I can call getAPNSToken() before getToken() but there isn't any difference. I'll get null returned anyways. And even if I do a null check with getAPNSToken(), Android devices will get null from getAPNSToken() and getToken() will not get executed.

I think getToken() should handle both iOS and Android scenarios gracefully instead of throwing errors.