报错：
server is DOWNnow, detailed error message: Optional[Distro protocol is not initialized]
关键日志：
com.alibaba.nacos.api.exception.NacosException: failed to req API:/nacos/v1/ns/instance/list after all servers([XXX:8848]) tried: ErrCode:503, ErrMsg:server is DOWNnow, detailed error message: Optional[Distro protocol is not initialized]
at com.alibaba.nacos.client.naming.net.NamingProxy.reqApi(NamingProxy.java:552)
at com.alibaba.nacos.client.naming.net.NamingProxy.reqApi(NamingProxy.java:491)
大约 1 分钟