MQ产品使用合集之RocketMQ发消息失败了，proxy报connect to null failed如何解决

@Slf4j
public class SyncProducer {
    public static void sendMessage(String topic, String message) {
        try {
            ClientServiceProvider provider = ClientServiceProvider.loadService();
            ClientConfiguration configuration = ClientConfiguration.newBuilder()
                    .setEndpoints("ip:9181")
                    .build();
            Producer producer = provider.newProducerBuilder()
                    .setClientConfiguration(configuration)
                    .setTopics(topic)
                    .build();
            String tag = "messageTag";
            Message msg = provider.newMessageBuilder()
                    .setTopic(topic)
                    .setTag(tag)
                    .setBody(message.getBytes(StandardCharsets.UTF_8))
                    .build();
            SendReceipt send = producer.send(msg);
            log.info("Send message successfully, messageId={}", send.getMessageId());
            producer.close();
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new RuntimeException(e.getMessage());
        }
    }
    public static void main(String[] args) {
        SyncProducer.sendMessage("TestTopic", "TestMessage");
    }
}

11:26:52.842 [main] ERROR com.xmzn.common.mq.producer.SyncProducer -- Expected the service ProducerImpl-0 [FAILED] to be RUNNING, but the service has FAILED
java.lang.IllegalStateException: Expected the service ProducerImpl-0 [FAILED] to be RUNNING, but the service has FAILED
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractService.checkCurrentState(AbstractService.java:381)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractService.awaitRunning(AbstractService.java:305)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractIdleService.awaitRunning(AbstractIdleService.java:165)
    at org.apache.rocketmq.client.java.impl.producer.ProducerBuilderImpl.build(ProducerBuilderImpl.java:93)
    at com.xmzn.common.mq.producer.SyncProducer.sendMessage(SyncProducer.java:29)
    at com.xmzn.common.mq.producer.SyncProducer.main(SyncProducer.java:46)
Caused by: java.util.concurrent.CancellationException: Task was cancelled.
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractFuture.cancellationExceptionWithCause(AbstractFuture.java:1543)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:586)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:567)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.FluentFuture$TrustedFuture.get(FluentFuture.java:91)
    at org.apache.rocketmq.client.java.impl.ClientImpl.startUp(ClientImpl.java:188)
    at org.apache.rocketmq.client.java.impl.producer.ProducerImpl.startUp(ProducerImpl.java:114)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.AbstractIdleService$DelegateService$1.run(AbstractIdleService.java:62)
    at org.apache.rocketmq.shaded.com.google.common.util.concurrent.Callables.lambda$threadRenaming$3(Callables.java:103)
    at java.base/java.lang.Thread.run(Thread.java:1583)
Exception in thread "main" java.lang.RuntimeException: Expected the service ProducerImpl-0 [FAILED] to be RUNNING, but the service has FAILED
    at com.xmzn.common.mq.producer.SyncProducer.sendMessage(SyncProducer.java:41)
    at com.xmzn.common.mq.producer.SyncProducer.main(SyncProducer.java:46)