onSpeechStart: undefined in IOS in react-native-community / voice

onSpeechStart: undefined in IOS in react-native-community/voice

but in android work's good

"react": "16.11.0",

"react-native": "0.62.2",

"@react-native-community/voice": "^1.1.3",

IOS:- 13.4.1

onSpeechStart = e => {
    console.log('onSpeechStart: ', e);
    this.setState({
      started: true,
    });
    try {
      console.log('onSpeechStart try:-', e);
    } catch (e) {
      console.error('onSpeechStart error:-', e);
    }
  };