TextAnalyticsClient throws APIErrorException 'NotFound' in v2.0.0-preview

Note: This is the same Issue affecting the FaceAPI as reported in #4534

Note: v2.0.0-preview does not include an implementation of ServiceClientCredentials, as noted as #4483, which is why I’ve included class ApiKeyServiceClientCredentials : ServiceClientCredentials in the sample code, below.

The following code, using Microsoft.Azure.CognitiveServices.Language.TextAnalytics v2.0.0-preview, throws Microsoft.Azure.CognitiveServices.Language.TextAnalytics.Models.ErrorResponseException:

Operation returned an invalid status code ‘NotFound’

readonly TextAnalyticsClient TextAnalyticsApiClient = new TextAnalyticsClient(new ApiKeyServiceClientCredentials(CognitiveServicesConstants.FaceApiKey));

public static async Task<Dictionary<string, double?>> GetSentiment(List<string> textList)
{
    var textIdDictionary = new Dictionary<string, string>();
    var multiLanguageBatchInput = new MultiLanguageBatchInput(new List<MultiLanguageInput>());

    foreach (var text in textList)
    {
        var textGuidString = Guid.NewGuid().ToString();

        textIdDictionary.Add(textGuidString, text);

        multiLanguageBatchInput.Documents.Add(new MultiLanguageInput(id: textGuidString, text: text));
    }

    var sentimentResults = await TextAnalyticsApiClient.SentimentAsync(multiLanguageBatchInput).ConfigureAwait(false);

    if (sentimentResults?.Errors?.Any() ?? false)
    {
        var exceptionList = sentimentResults.Errors.Select(x => new Exception($"Id: {x.Id}, Message: {x.Message}"));
        throw new AggregateException(exceptionList);
    }

    var resultsDictionary = new Dictionary<string, double?>();

    foreach (var result in sentimentResults?.Documents)
        resultsDictionary.Add(textIdDictionary[result.Id], result?.Score);

    return resultsDictionary;
}

class ApiKeyServiceClientCredentials : ServiceClientCredentials
{
    readonly string _subscriptionKey;

    public ApiKeyServiceClientCredentials(string subscriptionKey) => _subscriptionKey = subscriptionKey;

    public override Task ProcessHttpRequestAsync(System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
    {
        if (request is null)
            throw new ArgumentNullException("request");

        request.Headers.Add("Ocp-Apim-Subscription-Key", _subscriptionKey);

        return Task.FromResult<object>(null);
    }
}

[lealcrf]

Do like dev-aritra suggested. Set your endpoint only until microsoft.com, so it looks like, in my case, https://brazilsouth.api.cognitive.microsoft.com and NOT like https://brazilsouth.api.cognitive.microsoft.com/text/analytics/v2.0.

It worked for me.

[dev-aritra]

The workaround is to include the region and specify the URL till microsoft.com So my endpoint looks like https://centralindia.api.cognitive.microsoft.com this and not this https://centralindia.api.cognitive.microsoft.com/text/analytics/v2.0