#58 java.lang.NullPointerException in between the monitoring

[Jessica]

I am able to load all the beans from the tomcat server successfully,but in between the monitoring of server i am getting the following exception frequently i.e for 2 minutes.Can any one help me with this?

java.lang.NullPointerException
at org.mc4j.jre15.components.ThreadMBeanThreadBrowserComponent.refresh(ThreadMBeanThreadBrowserComponent.java:148)
at org.mc4j.console.dashboard.components.RefreshControlComponent.refreshContainer(RefreshControlComponent.java:178)
at org.mc4j.console.dashboard.components.RefreshControlComponent.refreshContainer(RefreshControlComponent.java:173)
at org.mc4j.console.dashboard.components.RefreshControlComponent.refresh(RefreshControlComponent.java:183)
at org.mc4j.console.dashboard.components.RefreshControlComponent$2.run(RefreshControlComponent.java:97)
at java.util.TimerThread.mainLoop(Timer.java:512)
[catch] at java.util.TimerThread.run(Timer.java:462)