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java.nio.channels.ClosedSelectorException: 	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:83)	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)	at zmq.Signaler.waitEvent(Signaler.java:148)	at zmq.Mailbox.recv(Mailbox.java:105)	at zmq.SocketBase.processCommands(SocketBase.java:796)	at zmq.SocketBase.send(SocketBase.java:634)	at org.zeromq.ZMQ$Socket.send(ZMQ.java:1302)	at org.zeromq.ZMQ$Socket.send(ZMQ.java:1291)	at com.bezirk.middleware.core.comms.Sender.sendMsg(Sender.java:176)	at com.bezirk.middleware.core.comms.Sender.send(Sender.java:106)	at com.bezirk.middleware.core.comms.Peer.send(Peer.java:124)	at com.bezirk.middleware.core.comms.JmqCommsManager.sendToAll(JmqCommsManager.java:53)	at com.bezirk.middleware.core.comms.processor.CommsProcessor.sendEventLedger(CommsProcessor.java:298)	at com.bezirk.middleware.core.pubsubbroker.PubSubBroker.sendMulticastEvent(PubSubBroker.java:254)	at com.bezirk.middleware.core.proxy.ProxyServer.sendEvent(ProxyServer.java:57)	at com.bezirk.middleware.java.proxy.ProxyClient.sendEvent(ProxyClient.java:188)	at com.bezirk.middleware.java.proxy.ProxyClient.sendEvent(ProxyClient.java:183)	at com.bezirk.beyond.protocols.TestBeyond.main(TestBeyond.java:125)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)