nacos日志输出：

2023-02-08 01:27:05.696 ERROR [com.alibaba.nacos.client.Worker:impl.ClientWorker] Async listen config change error 
com.alibaba.nacos.api.exception.NacosException: java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 76991 nanoseconds delay) for com.alibaba.nacos.shaded.io.grpc.stub.ClientCalls$GrpcFuture@3ac414b[status=PENDING, info=[GrpcFuture{clientCall={delegate={delegate=ClientCallImpl{method=MethodDescriptor{fullMethodName=Request/request, type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true, requestMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@163a037d, responseMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@2f3e38d9, schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@5c880de0}}}}}]]
	at com.alibaba.nacos.common.remote.client.grpc.GrpcConnection.request(GrpcConnection.java:78) ~[nacos-client-2.0.3.jar:?]
	at com.alibaba.nacos.common.remote.client.RpcClient.request(RpcClient.java:657) ~[nacos-client-2.0.3.jar:?]
	at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.requestProxy(ClientWorker.java:1067) ~[nacos-client-2.0.3.jar:?]
	at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.requestProxy(ClientWorker.java:1042) ~[nacos-client-2.0.3.jar:?]
	at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient.executeConfigListen(ClientWorker.java:831) ~[nacos-client-2.0.3.jar:?]
	at com.alibaba.nacos.client.config.impl.ClientWorker$ConfigRpcTransportClient$4.run(ClientWorker.java:748) ~[nacos-client-2.0.3.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_271]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_271]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) ~[?:1.8.0_271]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) ~[?:1.8.0_271]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[?:1.8.0_271]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[?:1.8.0_271]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_271]
Caused by: java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 76991 nanoseconds delay) for com.alibaba.nacos.shaded.io.grpc.stub.ClientCalls$GrpcFuture@3ac414b[status=PENDING, info=[GrpcFuture{clientCall={delegate={delegate=ClientCallImpl{method=MethodDescriptor{fullMethodName=Request/request, type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true, requestMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@163a037d, responseMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@2f3e38d9, schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@5c880de0}}}}}]]
	at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:508) ~[nacos-client-2.0.3.jar:?]
	at com.alibaba.nacos.common.remote.client.grpc.GrpcConnection.request(GrpcConnection.java:76) ~[nacos-client-2.0.3.jar:?]
	... 12 more

服务日志输出：

ERROR com.alibaba.nacos.common.remote.client.grpc.GrpcClient   - Server check fail, please check server 127.0.0.1 ,port 9848 is available , error =java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 700 milliseconds, 920851 nanoseconds delay) for com.alibaba.nacos.shaded.io.grpc.stub.ClientCalls$GrpcFuture@222114cf[status=PENDING, info=[GrpcFuture{clientCall={delegate={delegate=ClientCallImpl{method=MethodDescriptor{fullMethodName=Request/request, type=UNARY, idempotent=false, safe=false, sampledToLocalTracing=true, requestMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@fe9e33, responseMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@51886860, schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@27278e3a}}}}}]]

github上有一个类似的问题，传送门：https://github.com/alibaba/nacos/issues/7893

网上大部分答案都说是server跟client版本没对上，但是已经确认是同一个版本，都是2.0.3