Java Error

Java Error

Hi All,

I have Installed Application Manger in RHL-9 and Configure Monitor Mail Server. In Reports tab i have tryed to check health details of all monitors. im getting below error. Im sending support file.

ErrorDispatcherValve[localhost]: Exception Processing ErrorPage[exceptionType=java.lang.Throwable, location=/jsp/ErrorPage.jsp]
java.lang.ClassCastException: java.lang.NoClassDefFoundError


where im wrong, pls hlp me to fix this error.

Regards,

Ramesh.