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org.apache.activemq.transport.stomp.ProtocolException: Not connected.	at org.apache.activemq.transport.stomp.ProtocolConverter.checkConnected(ProtocolConverter.java:563)	at org.apache.activemq.transport.stomp.ProtocolConverter.onStompSubscribe(ProtocolConverter.java:387)	at org.apache.activemq.transport.stomp.ProtocolConverter.onStompCommand(ProtocolConverter.java:188)	at org.apache.activemq.transport.stomp.StompTransportFilter.onCommand(StompTransportFilter.java:70)	at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)	at org.apache.activemq.transport.stomp.StompNIOTransport.processCommand(StompNIOTransport.java:180)	at org.apache.activemq.transport.stomp.StompNIOTransport.serviceRead(StompNIOTransport.java:151)	at org.apache.activemq.transport.stomp.StompNIOTransport.access$000(StompNIOTransport.java:51)	at org.apache.activemq.transport.stomp.StompNIOTransport$1.onSelect(StompNIOTransport.java:80)	at org.apache.activemq.transport.nio.SelectorSelection.onSelect(SelectorSelection.java:94)	at org.apache.activemq.transport.nio.SelectorWorker$1.run(SelectorWorker.java:119)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)	at java.lang.Thread.run(Unknown Source)