title: Speech Recognition got an error on iOS
body: <p>I'm studying the Speech Recognition on the iOS, but Every time I call the method  [_recognitionRequest endAudio] , it always got an error in recognitionTaskWithRequest:  the message is in the bottom. </p>
  
  <pre><code>-(void) stopRecording {
  if (_disableSpeechSW == YES) {
      return;
  }
  if (_isAuthorization == NO) {
      return;
  }
  
  NSLog(@"stopRecording");
  
  if ([_audioEngine isRunning]) {
      [_audioEngine stop];
      [_recognitionRequest endAudio];
  }
  </code></pre>
  
  <p>}</p>
  
  <pre><code>-(void) startRecording {
  ..........
  [_speechRecognizer recognitionTaskWithRequest:_recognitionRequest
                     resultHandler:^(SFSpeechRecognitionResult *result,NSError *error){
    if (error != nil ) {
       NSLog(@"%@",[error description]);
    }
    else {
     ..........
    }
  }];}
  </code></pre>
  
  <blockquote>
    <p>[Utility] +[AFAggregator logDictationFailedWithError:] Error
    Domain=kAFAssistantErrorDomain Code=203 "Retry"
    UserInfo={NSLocalizedDescription=Retry, NSUnderlyingError=0x17424c690
    {Error Domain=SiriSpeechErrorDomain Code=1 "(null)"}}</p>
  </blockquote>