请教一个RocketMQ的相关问题[阿里云消息队列MQ]

请教一个RocketMQ的相关问题：
rocketmq5.0 broker，proxy.log打印如下异常日志：
2023-09-20 10:03:30 ERROR GrpcRouteThreadPool-0 – internal server error
java.lang.IllegalArgumentException: Unparseable port number: 172.26.240.17:18081,172.26.240.18
at com.google.common.net.HostAndPort.fromString(HostAndPort.java:201)
at com.google.common.net.HostAndPort.fromParts(HostAndPort.java:134)
at org.apache.rocketmq.proxy.grpc.v2.route.RouteActivity.convertToAddressList(RouteActivity.java:198)
at org.apache.rocketmq.proxy.grpc.v2.route.RouteActivity.queryRoute(RouteActivity.java:65)
at org.apache.rocketmq.proxy.grpc.v2.DefaultGrpcMessingActivity.queryRoute(DefaultGrpcMessingActivity.java:99)
at org.apache.rocketmq.proxy.grpc.v2.GrpcMessagingApplication.lambda$queryRoute$2(GrpcMessagingApplication.java:204)
at org.apache.rocketmq.proxy.grpc.v2.GrpcMessagingApplication$GrpcTask.run(GrpcMessagingApplication.java:447)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
这个是cpp语言的客户端。