不支持triple协议吗? 试了下,不大兼容

- [x] I have searched the [issues](https://github.com/apache/dubbo-admin/issues) of this repository and believe that this is not a duplicate.
- [x] I have checked the [REAMDE](https://github.com/apache/dubbo-admin/blob/develop/README.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo Admin version: 0.4.0
* Registry center detail (type and version): nacos 2.0.3
* Operating System version: win10
* Java version: 8

### Steps to reproduce this issue

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!
```

The report concerns Dubbo Admin 0.4.0 with a Nacos 2.0.3 registry on Windows 10 and Java 8, but it provides no reproduction steps, exception, or named files. First establish a reproducible triple-protocol compatibility failure and record the expected and actual behavior; the issue is done only when that behavior is resolved or clearly documented.

Written by the indexing model from the issue text.