javax.management.InstanceAlreadyExistsException: org.apache.activemq:type=Broker,brokerName=CHGBRD0111281
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
        at org.apache.activemq.broker.jmx.ManagementContext.registerMBean(ManagementContext.java:409)
        at org.apache.activemq.broker.jmx.AnnotatedMBean.registerMBean(AnnotatedMBean.java:93)
        at org.apache.activemq.broker.BrokerService.startManagementContext(BrokerService.java:2593)
        at org.apache.activemq.broker.BrokerService.start(BrokerService.java:607)
        at io.fabric8.mq.fabric.ActiveMQServiceFactory$ClusteredConfiguration.doStart(ActiveMQServiceFactory.java:556)
        at io.fabric8.mq.fabric.ActiveMQServiceFactory$ClusteredConfiguration.access$600(ActiveMQServiceFactory.java:359)
        at io.fabric8.mq.fabric.ActiveMQServiceFactory$ClusteredConfiguration$1.run(ActiveMQServiceFactory.java:499)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Exception in thread "Thread-8149" java.lang.RuntimeException
        at io.fabric8.mq.fabric.ActiveMQServiceFactory$ClusteredConfiguration.update_pool_state(ActiveMQServiceFactory.java:468)
        at io.fabric8.mq.fabric.ActiveMQServiceFactory$2.run(ActiveMQServiceFactory.java:258)
Caused by: java.lang.NullPointerException
        at io.fabric8.mq.fabric.ActiveMQServiceFactory$ClusteredConfiguration.update_pool_state(ActiveMQServiceFactory.java:460)
        ... 1 more