Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: java.net.ConnectException: Failed to connect to api.mch.weixin.qq.com/2402:4e00:8010:0:0:0:0:173:443] with root cause java.net.ConnectException: No route to host (connect failed)

统一服务消息=小程序模板消息+公众号模板消息，如果小程序模板消息要下线了，那统一服务消息是不是也废了？

调用模版消息的api接口templateMessage.send原来一直都正常，最近突然出现错误，报错 {"errcode":45103,"errmsg":"This API has been unsupported hint: [iR5FqA03873929]"} 程序没有任何改动，在官方文档中也没有找到45103的错误码说明。请问这是什么情况？？？