在Nacos中，启动的应用报了这个警告，为什么？
在Nacos中，启动的应用报了这个警告，为什么？2024-08-20 14:53:56.687 | WARN [com.alibaba.nacos.naming.beat.sender] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:01.797 | WARN [ThreadPoolTaskScheduler-1] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:02.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:06.691 | WARN [com.alibaba.nacos.naming.beat.sender] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:12.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:12.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:12.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:12.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:12.897 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:21.695 | WARN [com.alibaba.nacos.naming.beat.sender] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of con nection exception
2024-08-20 14:54:22.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:22.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:22.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:22.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:26.696 | WARN [com.alibaba.nacos.naming.beat.sender] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:31.699 | WARN [com.alibaba.nacos.naming.beat.sender] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:31.799 | WARN [ThreadPoolTaskScheduler-1] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.899 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.899 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.899 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.899 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.899 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.900 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.901 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.901 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.901 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:32.901 | WARN [com.alibaba.nacos.client.naming.updater] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
2024-08-20 14:54:36.701 | WARN [com.alibaba.nacos.naming.beat.sender] com.alibaba.nacos.client.naming - 628 : [NA] failed to request cause of connection exception
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