[AXTTSCommon] Invalid rule on IOS 16

[Dawid-Dlugosz]

On android devices all working good, but on iPhone 8 IOS 16 i get this message [AXTTSCommon] Invalid rule: [AXTTSCommon] File file:///var/MobileAsset/AssetsV2/com_apple_MobileAsset_Trial_Siri_SiriTextToSpeech/purpose_auto/763c859a817bf66a99314ef00b97f263806afcf2.asset/AssetData/vocalizer-user-dict.dat contained data that was not null terminated [AXTTSCommon] Invalid rule:

This is my code

class _MyHomePageState extends State<MyHomePage> {

  late FlutterTts _flutterTts;
  @override
  void initState() {
    super.initState();
    initTts();
  }

  void initTts() async {
    _flutterTts = FlutterTts();
    await _flutterTts.awaitSpeakCompletion(true);
  }

  Future speak() async {
    await _flutterTts.setVolume(1);
    await _flutterTts.setSpeechRate(0.5);
    await _flutterTts.setPitch(1);

    await _flutterTts.speak('Speak something');
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: TextButton(
            onPressed: speak,
            child: Text('Speak')),
      ),
    );
  }
}

library version: flutter_tts: ^3.6.2

flutter version: Flutter 3.3.8 • channel stable • https://github.com/flutter/flutter.git Framework • revision 52b3dc25f6 (2 weeks ago) • 2022-11-09 12:09:26 +0800 Engine • revision 857bd6b74c Tools • Dart 2.18.4 • DevTools 2.15.0

[tobzilla90]

Hi, I also experienced the error reported by @PeakyCode. The TTS package is still working and the error only shows for me once or twice after I changed the default voice for the language in my iPhone settings (Settings -> Accessibility->Voices->[Japanese]) to a different one (ex. Kyoko (Japanese) to Otoya (Japanese)) . The word/sentence still got spoken but on first execution the error shows up in the console.

Tested on physical iPhone 13 device with iOS 16.1 installed.

[jasonmaclafferty]

I'm getting the same error as @PeakyCode when running on a iPhone SE 2nd gen with iOS 16. @dlutton do we know when it might be possible to have this issue fixed? I understand that it could be a while and developer time may be very limited.

[dlutton]

@jasonmaclafferty thanks for the info, I'll need to do some research into this issue.

[frankenstein19]

I'm getting the same error in iOS 16.

[julianbraasch]

I'm having the same issue, also iOS 16. Additionally the sound output is about 5 seconds delayed. During this time, a lot of "Invalid rule" messages appear in the log.

[dev-yakuza]

I have the same issue on the real device with iOS 16.

[AXTTSCommon] Invalid rule:
[AXTTSCommon] File file:///var/MobileAsset/AssetsV2/com_apple_MobileAsset_Trial_Siri_SiriTextToSpeech/purpose_auto/f52d411b9d92ecd7f55947535cdb7753afe834c3.asset/AssetData/vocalizer-user-dict.dat contained data that was not null terminated

My app has a feature to speak words in the loop. When this feature is used, many [AXTTSCommon] Invalid rule: messages are shown and the app crashes after 15 minutes with the following message. So, I think this issue can cause the app to crash due to memory.

43
[AXTTSCommon] Invalid rule:
* thread #36, name = 'com.apple.TextToSpeech.SpeechThread', queue = 'tts-regex-helper-queue', stop reason = EXC_RESOURCE RESOURCE_TYPE_MEMORY (limit=2098 MB, unused=0x0)
    frame #0: 0x00000001addd69b8 CoreFoundation`__CFToUTF8 + 408
CoreFoundation`:
->  0x1addd69b8 <+408>: strb   w19, [x8, #0x2]
    0x1addd69bc <+412>: lsr    w21, w21, #6
    0x1addd69c0 <+416>: mov    w19, #0x80
    0x1addd69c4 <+420>: bfxil  w19, w21, #0, #6
Target 0: (Runner) stopped.

[torphix]

maybe related to this: https://developer.apple.com/forums/thread/718884

[BlindDevIE]

I'm experiencing the same issue you mentioned here. The message ([AXTTSCommon] Invalid rule:) keeps popping up while the TTS is speaking. Has anyone figured out how to fix it?

It's only happening on iOS. I'm using: Flutter 3.7.8 flutter_tts 3.6.3 iOS 16.4

Thanks!

[MrOnyszko]

It is affecting me too.

[yishaiSilver]

#311 Solved it for me.