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java.lang.IllegalStateException: Timer already cancelled.	at java.util.Timer.sched(Timer.java:397)	at java.util.Timer.schedule(Timer.java:248)	at org.apache.activemq.thread.Scheduler.schedualPeriodically(Scheduler.java:50)	at org.apache.activemq.broker.region.Topic.start(Topic.java:541)	at org.apache.activemq.broker.region.AbstractRegion.addDestination(AbstractRegion.java:143)	at org.apache.activemq.broker.region.RegionBroker.addDestination(RegionBroker.java:286)	at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:145)	at org.apache.activemq.advisory.AdvisoryBroker.addDestination(AdvisoryBroker.java:175)	at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:145)	at org.apache.activemq.broker.BrokerFilter.addDestination(BrokerFilter.java:145)	at org.apache.activemq.broker.MutableBrokerFilter.addDestination(MutableBrokerFilter.java:151)	at org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:481)	at org.apache.activemq.broker.jmx.ManagedRegionBroker.send(ManagedRegionBroker.java:311)	at org.apache.activemq.advisory.AdvisoryBroker.fireAdvisory(AdvisoryBroker.java:551)	at org.apache.activemq.advisory.AdvisoryBroker.fireProducerAdvisory(AdvisoryBroker.java:519)	at org.apache.activemq.advisory.AdvisoryBroker.fireProducerAdvisory(AdvisoryBroker.java:504)	at org.apache.activemq.advisory.AdvisoryBroker.addProducer(AdvisoryBroker.java:168)	at org.apache.activemq.broker.CompositeDestinationBroker.addProducer(CompositeDestinationBroker.java:56)	at org.apache.activemq.broker.BrokerFilter.addProducer(BrokerFilter.java:93)	at org.apache.activemq.broker.MutableBrokerFilter.addProducer(MutableBrokerFilter.java:99)	at org.apache.activemq.broker.TransportConnection.processAddProducer(TransportConnection.java:511)	at org.apache.activemq.command.ProducerInfo.visit(ProducerInfo.java:105)	at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:294)	at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:152)	at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)	at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)	at org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:256)	at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)	at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:222)	at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:204)	at java.lang.Thread.run(Thread.java:724)