Future<String> convertSpeechToText(String filePath) async {
    File audioFile = File(filePath);

    try {
      print(" convertSpeechToText start transcription ");
      OpenAIAudioModel transcription = await OpenAI.instance.audio.createTranscription(
        file: audioFile,
        model: "whisper-1",
        responseFormat: OpenAIAudioResponseFormat.text,
      );
      print(" convertSpeechToText start done ");
      return transcription.text;
    } catch (e) {
      print(" convertSpeechToText error " + e.toString());
      return "Error: $e";
    }
  }

D/FilePickerUtils(10601): File loaded and cached at:/data/user/0/com.example.tutor_ai/cache/file_picker/1741079453984/Cách để tập trung làm việc.mp3
D/FilePickerDelegate(10601): File path:[com.mr.flutter.plugin.filepicker.FileInfo@ace0a0f]
I/flutter (10601):  convertSpeechToText start
I/flutter (10601):  convertSpeechToText start transcription 
I/flutter (10601):  convertSpeechToText error TimeoutException after 0:00:30.000000: Future not completed
Lost connection to device.