java.lang.NoClassDefFoundError

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  • what is internal 500 error ?
    via by 807596,
    • java.lang.NoClassDefFoundError at com.nextjet.web.struts.NJActionErrors.addMappedError(NJActionErrors.java:208) at com.nextjet.web.struts.NJActionErrors.addException(NJActionErrors.java:111) at com.nextjet.web.struts.BaseActionForm.handleException(BaseActionForm.java:86) at com.nextjet.web.struts.BaseActionForm.reset(BaseActionForm.java:58) at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:790) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:244) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1109) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:452) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305) at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:301) at weblogic.servlet.jsp.PageContextImpl.forward(PageContextImpl.java:150) at jsp_servlet.__index._jspService(__index.java:114) at weblogic.servlet.jsp.JspBase.service(JspBase.java:33) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:446) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
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