发生意外错误。提供程序返回了一个错误的结果，但未给出错误信息。

Unexpected error occurred. The provider has returned an error result without an error message.

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如果发生意外错误，并且没有专门建模错误处理程序来处理该错误，则需要该操作。

This is required if an unexpected error occurs and there is no fault handler specifically modeled to handle it.

youdao

如果发生意外错误，并且没有专门建模错误处理程序来处理该错误，则需要该操作。

This is required if an unexpected error occurs and there is no fault handler specifically modeled to handle it.

youdao