When the Huawei Cloud Stack administrator accesses the Enterprise Host Security Service Console page, he finds an error message on the page: "#$% Failed to query vulnerability information". Which of the following descriptions of the possible causes of this failure is wrong?

When the Huawei Cloud Stack administrator accesses the Enterprise Host Security Service Console page, he finds an error message on the page: "#$% Failed to query vulnerability information". Which of the following descriptions of the possible causes of this failure is wrong?
A . Middleware Mysql exception
B . Middleware Redis exception
C . Middleware Kafka exception
D . HSS-neuron-access server component is abnormal

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Answer: C