Nacos 报错： java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers

分布式模块启动nacos报错

（ps：纯属自己给自己挖坑）
错误情况：建立了三个分布式子模块，其中两个启动没问题，有一个启动一直报错，其中错误信息如下：

java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([127.0.0.1:8848]) tried: failed to req API:http://127.0.0.1:8848/nacos/v1/ns/instance. code:400 msg: java.lang.IllegalArgumentException: dom name can only have these characters: 0-9a-zA-Z-._:, current: DEFAULT_GROUP@@service-edu  # Ãû³Æ²»ÄÜдÏ»®Ïß
	at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:380)
	at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:304)
	at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:186)
	at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:298)
	at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:279)
	at org.springframework.cloud.alibaba.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:63)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239)
	at org.springframework.cloud.alibaba.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:74)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88)
	at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403)
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215)

错误的原因在上面链接中查看 http://127.0.0.1:8848/nacos/v1/ns/instance，

看到这里才发现是服务器名称不对，然后去看application.properties文件，发现对应的注释写错。下面是错误情况：

去掉后面的注释，重新启动该模块，成功！

又是被自己气哭的一天，踩个点，要是大家也有类似的这种睿智情况，还希望早点找到问题所在！