Exception in thread "ActiveMQ InactivityMonitor WriteCheckTimer" Exception in thread "ActiveMQ InactivityMonitor ReadCheckTimer" java.lang.NullPointerException
        at org.slf4j.impl.Log4jLoggerAdapter.isTraceEnabled(Log4jLoggerAdapter.java:97)
        at org.apache.activemq.transport.AbstractInactivityMonitor.writeCheck(AbstractInactivityMonitor.java:183)
        at org.apache.activemq.transport.AbstractInactivityMonitor$2.run(AbstractInactivityMonitor.java:117)
        at org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
        at java.util.TimerThread.mainLoop(Timer.java:512)
        at java.util.TimerThread.run(Timer.java:462)
java.lang.NullPointerException
        at org.slf4j.impl.Log4jLoggerAdapter.isTraceEnabled(Log4jLoggerAdapter.java:97)
        at org.apache.activemq.transport.AbstractInactivityMonitor.readCheck(AbstractInactivityMonitor.java:195)
        at org.apache.activemq.transport.AbstractInactivityMonitor$1.run(AbstractInactivityMonitor.java:95)
        at org.apache.activemq.thread.SchedulerTimerTask.run(SchedulerTimerTask.java:33)
        at java.util.TimerThread.mainLoop(Timer.java:512)
        at java.util.TimerThread.run(Timer.java:462)
Exception in thread "ActiveMQ Transport: tcp://localhost/127.0.0.1:61616@56195" java.lang.NullPointerException
        at org.slf4j.impl.Log4jLoggerAdapter.debug(Log4jLoggerAdapter.java:286)
        at org.apache.activemq.transport.TransportSupport.onException(TransportSupport.java:100)
        at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:208)
        at java.lang.Thread.run(Thread.java:680)