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This exception has no message.
java.lang.NullPointerException: 	at org.jboss.mx.loading.RepositoryClassLoader.findClass(RepositoryClassLoader.java:620)	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)	at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:464)	at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:405)	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)	at org.jboss.jms.client.delegate.DelegateSupport.handleThrowable(DelegateSupport.java:215)	at org.jboss.jms.client.delegate.DelegateSupport.doInvoke(DelegateSupport.java:200)	at org.jboss.jms.client.delegate.DelegateSupport.doInvoke(DelegateSupport.java:155)	at org.jboss.jms.client.delegate.ClientConnectionDelegate.org$jboss$jms$client$delegate$ClientConnectionDelegate$close$aop(ClientConnectionDelegate.java:151)	at org.jboss.jms.client.delegate.ClientConnectionDelegate$close_N4742752445160157748.invokeNext(ClientConnectionDelegate$close_N4742752445160157748.java)	at org.jboss.jms.client.container.ConnectionAspect.handleClose(ConnectionAspect.java:166)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at org.jboss.aop.advice.PerInstanceAdvice.invoke(PerInstanceAdvice.java:121)	at org.jboss.jms.client.delegate.ClientConnectionDelegate$close_N4742752445160157748.invokeNext(ClientConnectionDelegate$close_N4742752445160157748.java)	at org.jboss.jms.client.container.FailoverValveInterceptor.invoke(FailoverValveInterceptor.java:91)	at org.jboss.aop.advice.PerInstanceInterceptor.invoke(PerInstanceInterceptor.java:105)	at org.jboss.jms.client.delegate.ClientConnectionDelegate$close_N4742752445160157748.invokeNext(ClientConnectionDelegate$close_N4742752445160157748.java)	at org.jboss.jms.client.container.ClosedInterceptor.invoke(ClosedInterceptor.java:171)	at org.jboss.aop.advice.PerInstanceInterceptor.invoke(PerInstanceInterceptor.java:105)	at org.jboss.jms.client.delegate.ClientConnectionDelegate$close_N4742752445160157748.invokeNext(ClientConnectionDelegate$close_N4742752445160157748.java)	at org.jboss.jms.client.container.ExceptionInterceptor.invoke(ExceptionInterceptor.java:71)	at org.jboss.jms.client.delegate.ClientConnectionDelegate$close_N4742752445160157748.invokeNext(ClientConnectionDelegate$close_N4742752445160157748.java)	at org.jboss.jms.client.container.ClientLogInterceptor.invoke(ClientLogInterceptor.java:107)	at org.jboss.jms.client.delegate.ClientConnectionDelegate$close_N4742752445160157748.invokeNext(ClientConnectionDelegate$close_N4742752445160157748.java)	at org.jboss.jms.client.delegate.ClientConnectionDelegate.close(ClientConnectionDelegate.java)	at org.jboss.jms.client.JBossConnection.close(JBossConnection.java:132)	at com.eLynx.Messaging.MessageReceiver.run(MessageReceiver.java:609)