dubbo service接口偶发性500

部署好后，偶发性500错误，现在直接500了，服务裂开了。。。。

### Environment

* Dubbo Admin version: xxx
* Registry center detail (type and version): xxx
* Operating System version: xxx
* Java version: xxx

### Steps to reproduce this issue

1. xxx
2. xxx
3. xxx

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

What do you expected from the above steps？

### Actual Result

What actually happens?

If there is an exception, please attach the exception trace:

```
Just put your stack trace here!
```

No source file, test, reproduction steps, environment details, or exception trace is provided. Start by obtaining those missing details for the Dubbo service-interface 500 response; done means the failure is reproducible, its cause is identified, and a regression test or verified fix is documented.

Written by the indexing model from the issue text.