与同步调用类似，InvalidSymbolException 指示 请求已到达服务提供程序，该提供程序抛出业务异常，指示符号无效。

Similar to a synchronous invocation, InvalidSymbolException indicates that the request has reached the service provider, which has thrown a business exception stating that the symbol is invalid.

youdao

我被搞懵了，接下来我能记得的，就是看见一些数字符号啥的出现了，最后出现一个错误信息，像是'文件格式无效'什么的。

The next thing I know, all these Numbers and symbols show up and I get an error message saying 'invalid file format' or something.

youdao

服务提供程序然后抛出业务异常，指示提供的符号无效。

The service provider then throws a business exception stating that the symbol supplied is invalid.

youdao