HTTP Status 500 - type Exception report message descriptionThe server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Cant instantiate class: com.navisite.osgi.webapplication

HTTP Status 500 -

type Exception report

message

descriptionThe server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Cant instantiate class: com.navisite.osgi.webapplication.bean.assessments.AssessmentReportBean.

root cause

com.sun.faces.mgbean.ManagedBeanCreationException: Cant instantiate class: com.navisite.osgi.webapplication.bean.assessments.AssessmentReportBean.

root cause

java.lang.NullPointerException

note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 3.1.2.2 logs.

GlassFish Server Open Source Edition 3.1.2.2 can someone explain what to do here