[bug] Audio engine returned error code

[bdlukaa]

Describe the bug

On the pre join screen, one of our users reported this bug:

AudioProcessingException: AudioProcessingException(applyFailed): Audio engine returned error code: -9001
#0      LocalAudioTrack.startCapture (package:livekit_client/src/track/local/audio.dart:89)
  File "<asynchronous suspension>"
#2      Track.start (package:livekit_client/src/track/track.dart:113)
  File "<asynchronous suspension>"
#4      _PrejoinSessionScreenState._initializeLocalAudio (package:totem_core/features/sessions/screens/loading_screen.dart:224)

To Reproduce

Try to create a LocalAudioTrack. See bug.

Expected behavior

No bug and audio track is initialized correctly.

Platform information

• Flutter version: Flutter (Channel stable, 3.44.4, on macOS 26.5.2 25F84 darwin-arm64, locale pt-BR)
• Plugin version: v2.9.0
• Flutter target OS: iOS
• Flutter target OS version: Flutter 3.44.6 (stable)

Additional Information

• Error: Audio Engine Error(Audio engine returned error code: -3010) client-sdk-swift#849

[umairshah3sb]

I am facing same issue on IOS, I have update to 2.11.0, but still facing it, I have latest flutter verison, and apply various method but not fixing

[MaxHeimbrock]

This happens out of the box as well on the Flutter Agent Starter when building to iOS at the moment. I will look into fixing it in the SDK.