UWP应用使用语音识别功能运行报错如何解决

我正在开发一款集成了语音搜索功能的UWP应用，参考了以下两段公开代码，但运行时均抛出错误，自行检索网络资源未找到对应解决方案，恳请各位提供可行的解决方法。

参考代码 #

代码段1（来源：Windows官方博客语音识别相关内容） #

var speechRecognizer = new Windows.Media.SpeechRecognition.SpeechRecognizer();

//speechRecognizer.RecognitionQualityDegrading += speechRecognizer_RecognitionQualityDegrading;

// Add a web search grammar to the recognizer.
var webSearchGrammar = new Windows.Media.SpeechRecognition.SpeechRecognitionTopicConstraint(Windows.Media.SpeechRecognition.SpeechRecognitionScenario.WebSearch, "webSearch");


speechRecognizer.UIOptions.AudiblePrompt = "Say what you want to search for...";
speechRecognizer.UIOptions.ExampleText = @"Ex. 'weather for London'";
speechRecognizer.Constraints.Add(webSearchGrammar);


// Compile the constraint.
await speechRecognizer.CompileConstraintsAsync();

// Start recognition.
Windows.Media.SpeechRecognition.SpeechRecognitionResult speechRecognitionResult = await speechRecognizer.RecognizeWithUIAsync();
await speechRecognizer.RecognizeWithUIAsync();

// Do something with the recognition result.
var messageDialog = new Windows.UI.Popups.MessageDialog(speechRecognitionResult.Text, "Text spoken");
await messageDialog.ShowAsync();

代码段2（来源：第三方技术站点） #

async void Button_Click_2(object sender, RoutedEventArgs e)
{
    this.recognizer = new SpeechRecognizer();
    await this.recognizer.CompileConstraintsAsync();

    this.recognizer.Timeouts.InitialSilenceTimeout = TimeSpan.FromSeconds(5);
    this.recognizer.Timeouts.EndSilenceTimeout = TimeSpan.FromSeconds(20);

    this.recognizer.UIOptions.AudiblePrompt = "Say whatever you like, I'm listening";
    this.recognizer.UIOptions.ExampleText = "The quick brown fox jumps over the lazy dog";
    this.recognizer.UIOptions.ShowConfirmation = true;
    this.recognizer.UIOptions.IsReadBackEnabled = true;
    this.recognizer.Timeouts.BabbleTimeout = TimeSpan.FromSeconds(5);

    var result = await this.recognizer.RecognizeWithUIAsync();

    if (result != null)
    {
        StringBuilder builder = new StringBuilder();

        builder.AppendLine(
          $"I have {result.Confidence} confidence that you said [{result.Text}] " +
          $"and it took {result.PhraseDuration.TotalSeconds} seconds to say it " +
          $"starting at {result.PhraseStartTime:g}");

        var alternates = result.GetAlternates(10);

        builder.AppendLine(
          $"There were {alternates?.Count} alternates - listed below (if any)");

        if (alternates != null)
        {
            foreach (var alternate in alternates)
            {
                builder.AppendLine(
                  $"Alternate {alternate.Confidence} confident you said [{alternate.Text}]");
            }
        }
        this.txtResults.Text = builder.ToString();
    }
}
SpeechRecognizer recognizer;

错误截图 #

内容的提问来源于stack exchange，提问作者Levi Israel