type Exception report
message java.lang.NullPointerException
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.NullPointerException org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:560) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.mmk.web.ControllerServlet.doGet(ControllerServlet.java:24) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.mmk.web.filters.ReplaceTextFilter.doFilter(ReplaceTextFilter.java:137) com.mmk.web.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:170) com.mmk.web.redirect.RedirectFilter.doFilter(RedirectFilter.java:41)
root cause
java.lang.NullPointerException com.mmk.web.MenuHandler.getInstance(MenuHandler.java:102) com.mmk.web.taglib.MenuHandlerTag.doStartTag(MenuHandlerTag.java:38) org.apache.jsp.index_jsp._jspx_meth_sm_005fmenuhandler_005f0(index_jsp.java:846) org.apache.jsp.index_jsp._jspService(index_jsp.java:204) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:435) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.mmk.web.ControllerServlet.doGet(ControllerServlet.java:24) javax.servlet.http.HttpServlet.service(HttpServlet.java:622) javax.servlet.http.HttpServlet.service(HttpServlet.java:729) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) com.mmk.web.filters.ReplaceTextFilter.doFilter(ReplaceTextFilter.java:137) com.mmk.web.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:170) com.mmk.web.redirect.RedirectFilter.doFilter(RedirectFilter.java:41)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.38 logs.