[textanalytics] AttributeError: NoneType object has no attribute 'errors'

Got a customer report that this error arises transiently when calling begin_analyze_healthcare_entities in the 5.1.0 version of the library.

I’ve mocked what I think might be happening here, but I haven’t been able to reproduce the error on my own to confirm it.

My assumption is that the service is failing or cancelling the task which is resulting in the HealthcareTaskResult being returned in the response without results or errors properties. We try to access the errors on the HealthcareResult in code and the error is raised.

[kristapratico]

Update: the client library is unable to discern whether the “cancelled” status comes from the service or is initiated by the user. We do not want to raise an exception in the latter case. The service plans to add an error code/message at the job level if the quota is exceeded on the free tier. Once this fix is in place, we can handle this gracefully in the library. Service tracking issue: https://dev.azure.com/msazure/Cognitive Services/_workitems/edit/15424421

[kristapratico]

This has been resolved by the service. Now a 4xx is returned if quota is exceeded and the client library raises the error:

azure.core.exceptions.HttpResponseError: (403) Out of call volume quota for TextAnalytics F0 pricing tier. Please retry after 3 days. To increase your call volume switch to a paid tier.
Code: 403
Message: Out of call volume quota for TextAnalytics F0 pricing tier. Please retry after 3 days. To increase your call volume switch to a paid tier.

No patch is necessary for the client library.