姚老师，请教个问题：流控规则--链路流控，无效；也百度了一下，配置spring.cloud.sentinel.web-context-unify=false无效。麻烦老师指导一下 代码如下： ``` // 读取优惠券 @GetMapping("/getTemplate") // @SentinelResource(value = "getTemplate") public CouponTemplateInfo getTemplate(@RequestParam("id") Long id){ log.info("Load template, id={}", id); return couponTemplateService.loadTemplateInfo(id); } @GetMapping("/getTemplate1") // @SentinelResource(value = "getTemplate1") public CouponTemplateInfo getTemplate1(@RequestParam("id") Long id){ log.info("Load template, id={}", id); return couponTemplateService.loadTemplateInfo(id); } 资源 public interface CouponTemplateService { // 通过模板ID查询优惠券模板 @SentinelResource(value = "loadTemplateInfo") CouponTemplateInfo loadTemplateInfo(Long id); } ```

请问添加流控规则，sentinel控制台直接弹窗显示失败，报错日志如下，是什么原因呢？ 2022-05-06 15:37:21.357 ERROR 61049 --- [nio-8081-exec-1] c.a.c.s.d.controller.FlowControllerV1 : Failed to add new flow rule, app=coupon-template-serv, ip=localhost com.alibaba.csp.sentinel.dashboard.client.CommandFailedException: 2022-05-06 15:37:22.724 ERROR 61049 --- [Worker-thread-6] c.a.c.s.dashboard.metric.MetricFetcher : fetch metric http://localhost:8081:8719/metric?startTime=1651822634000&endTime=1651822640000&refetch=false error org.apache.http.client.ClientProtocolException: URI does not specify a valid host name: http://localhost:8081:8719/metric?startTime=1651822634000&endTime=1651822640000&refetch=false at org.apache.http.impl.nio.client.CloseableHttpAsyncClient.determineTarget(CloseableHttpAsyncClient.java:121) [httpasyncclient-4.1.3.jar!/:4.1.3] at org.apache.http.impl.nio.client.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:102) [httpasyncclient-4.1.3.jar!/:4.1.3] at org.apache.http.impl.nio.client.CloseableHttpAsyncClient.execute(CloseableHttpAsyncClient.java:92) [httpasyncclient-4.1.3.jar!/:4.1.3] at com.alibaba.csp.sentinel.dashboard.metric.MetricFetcher.fetchOnce(MetricFetcher.java:214) [classes!/:na] at com.alibaba.csp.sentinel.dashboard.metric.MetricFetcher.lambda$doFetchAppMetric$3(MetricFetcher.java:282) [classes!/:na] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_312] at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_312] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_312] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_312] at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_312]