Метод проверки подлинности в ServiceAuthenticationManager вернул значение NULL. Если в коллекции не нужен возврат политик авторизации, необходимо вернуть пустой объект ReadOnlyCollection.

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The authenticate method in the ServiceAuthenticationManager returned null. If you do not want to return any authorization policies in the collection then return an empty ReadOnlyCollection instead.

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