Debugger pauses in `aws_retryer.dart` when using Flutter 3.16

[seanhamstra]

Debugger pauses in `aws_retryer.dart` when using Flutter 3.16

[haverchuck]

This is fixed on amplify flutter 1.6.3.

[Equartey]

@seanhamstra ah my bad, yah I'm on Flutter 3.16.7.

Thanks for the additional details.

I've been able to reproduce the issue. I'm currently investigating and will provide an update when I can.

[Jordan-Nelson]

I was able to create a minimal repro of this issue and opened an issue in the Flutter repo (see: flutter/flutter#141882).

I think we can workaround this though. I will look into a workaround and try to get a PR open.

[Jordan-Nelson]

The PR has been merged and should be included in the next release. In the meantime you can pull in this change by adding the following line to your pubspec.yaml file.

dependency_overrides:
  smithy_aws:
    git:
      url: https://github.com/aws-amplify/amplify-flutter.git
      path: packages/smithy/smithy_aws

[Equartey]

Hi @seanhamstra sorry to hear you've ran into this exception.

I'm unable to reproduce this on my end.

I was testing using:

• Android Simulator
• Latest Amplify packages: 1.6.x
• Flutter: 1.6.7

Is this correct?

In your IDE do you have it set to stop at all exceptions?

Are you able to reproduce this on a minimal example app?

Can you please provide your full pubspec.yaml file?

[seanhamstra]

Thanks, @Equartey! Was "Flutter: 1.6.7" a mistype? 3.16.7 perhaps?

I only have "Uncaught Exceptions" enabled.

No, I haven't not setup a minimal example project at this time.

Here is the pubspec though:

name: someApp
description: someApp
version: 1.0.0+10
publish_to: none

environment:
  sdk: ">=3.0.5 <4.0.0"
  flutter: 3.13.7

dependencies:
  amplify_api: ^1.6.2
  amplify_auth_cognito: ^1.6.1
  amplify_core: ^1.6.1
  amplify_flutter: ^1.6.1
  auto_route: ^5.0.2
  auto_size_text: ^3.0.0
  bloc: ^8.1.0
  carousel_slider: ^4.1.1
  collection: ^1.17.1
  connectivity_plus: ^5.0.2
  convert: ^3.1.1
  dartz: ^0.10.1
  device_info_plus: ^9.0.0
  dio: ^5.2.1
  dio_smart_retry: ^6.0.0
  dotted_border: ^2.1.0
  dynamic_color: ^1.6.6
  firebase_analytics: ^10.4.3
  firebase_core: ^2.15.1
  firebase_crashlytics: ^3.3.5
  firebase_performance: ^0.9.2+5
  flutter:
    sdk: flutter
  flutter_animate: ^4.2.0+1
  flutter_app_badger: ^1.5.0
  flutter_bloc: ^8.1.1
  flutter_cache_manager: ^3.3.1
  flutter_fgbg: ^0.3.0
  flutter_local_notifications: ^15.1.0+1
  flutter_localizations:
    sdk: flutter
  flutter_native_splash: ^2.3.4
  flutter_native_timezone: ^2.0.0
  flutter_reactive_ble: ^5.2.0
  flutter_slidable: ^3.0.0
  flutter_svg: ^2.0.7
  freezed_annotation: ^2.1.0
  get_it: ^7.6.4
  grouped_list: ^5.1.2
  image_picker: ^1.0.4
  internet_connection_checker: ^1.0.0+1
  intl: ^0.18.0
  isar: ^3.1.0+1
  isar_flutter_libs: ^3.1.0+1
  json_annotation: ^4.8.1
  layout: ^1.0.5
  loader_overlay: ^2.3.2
  loading_animation_widget: ^1.2.0+4
  logging: ^1.1.0
  lottie: ^2.6.0
  mobile_scanner: ^2.0.0
  native_device_orientation: ^1.1.4
  package_info_plus: ^4.2.0
  path_drawing: ^1.0.1
  path_provider: ^2.1.1
  permission_handler: ^11.0.0
  photo_view: ^0.14.0
  platform: ^3.1.2
  push: ^1.0.1
  quickalert: ^1.0.2
  reactive_forms: ^14.3.0
  result_dart: ^1.1.0
  rxdart: ^0.27.7
  sentry_flutter: ^7.10.1
  share_plus: ^7.2.1
  shared_preferences: ^2.2.1
  smooth_page_indicator: ^1.0.0+2
  timeago_flutter: ^3.5.0
  timezone: ^0.9.2
  url_launcher: ^6.1.14
  uuid: ^3.0.7

dev_dependencies:
  auto_route_generator: ^5.0.2
  bloc_test: ^9.1.0
  build_runner: ^2.4.6
  flutter_gen_runner:
  flutter_test:
    sdk: flutter
  freezed: ^2.4.1
  isar_generator: ^3.1.0+1
  json_serializable: ^6.7.1
  mocktail: ^1.0.0
  very_good_analysis: ^5.1.0

# Make sure freezed runs before isar for models that utilize both
global_options:
  freezed:freezed:
    runs_before:
      - isar_generator:isar_generator

flutter:
  uses-material-design: true
  generate: true
  assets:
    - assets/fonts/
    - assets/gifs/
    - assets/images/
    - assets/lottie/

flutter_gen:
  integrations:
    flutter_svg: true
    lottie: true

[Equartey]

@seanhamstra do you get the same exception UnsupportedOperationException every time?

Can you also share your amplifyconfiguration.json, at least the auth section, with any sensitive info removed?

[Jordan-Nelson]

I can reproduce this issue on Flutter 3.16.0, but cannot on Flutter 3.13.9. We have had a similar issue to this (see: #2718) that was resolved. It seems like something changed in the latest version of Flutter or Dart that is causing this to surface again. It isn't clear if this is actually a bug in Amplify Flutter or if this is a bug in Flutter/Dart. We will need to spend some time investigating it.

I wanted to note that I cannot repro the exact same exception you are seeing (UnsupportedOperationException). I think that exception might be specific to your configuration. If you can share your auth config we might be able to confirm that.

[Jordan-Nelson]

I have a PR up that should resolve this. You can test this out by manually changing 4 lines of code in aws_retryer.dart. You do not need to make the other changes in that PR.

[seanhamstra]

@Jordan-Nelson that works. Thank you!!