HTTP Status 500 - type Exception report message description The server encountered an internal error that prevented it from fulfilling this request. exception java.lang.NullPointerException jump.IndexController.doGet(IndexController.java:66) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.33 logs. Apache Tomcat/7.0.33