UnknownServiceError Unknown service: 'cognito-idp'

[taschik]

Hi,

We are encountering occasional the following error message in our backend that creates user account in AWS Cognito:

UnknownServiceError: Unknown service: 'cognito-idp'. Valid service names are: acm, acm-pca, amplify, apigateway, apigatewayv2, application-autoscaling, appmesh, appstream, appsync, athena, autoscaling, autoscaling-plans, backup, batch, budgets, ce, clouddirectory, cloudformation, cloudfront, cloudsearchdomain, cloudtrail, cloudwatch, codebuild, codeguruprofiler, codepipeline, codestar-notifications, cognito-identity, cognito-sync, comprehend, config, cur, dataexchange, datapipeline, dax, detective, devicefarm, directconnect,...
  File "django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
 ....
  File "__init__.py", line 91, in client
    return _get_default_session().client(*args, **kwargs)
  File "boto3/session.py", line 263, in client
    aws_session_token=aws_session_token, config=config)
  File "botocore/session.py", line 835, in create_client
    client_config=config, api_version=api_version)
  File "botocore/client.py", line 76, in create_client
    service_model = self._load_service_model(service_name, api_version)
  File "botocore/client.py", line 114, in _load_service_model
    api_version=api_version)
  File "botocore/loaders.py", line 132, in _wrapper
    data = func(self, *args, **kwargs)
  File "botocore/loaders.py", line 378, in load_service_model
    known_service_names=', '.join(sorted(known_services)))

We are running on:

boto3==1.10.24
botocore==1.13.24.
Python 3.7.5 (3.7.5 (default, Nov 23 2019, 06:10:46) [GCC 8.3.0])

It is working fine for most of the days but every other day or this exception is getting thrown. Any idea why and how to fix this?

Thanks a lot!

[swetashre]

@taschik - Thank you for your post. Can you please make sure your "botocore/data" directory contain the "cognito-idp" service model ? I can think of only this is a reason for the error. But as you mentioned it is giving error only on the other day i am wondering if your code is using different version of botocore or different model every time.

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