Apache Tomcat Servlet Error in GenericServlet.getServletName

Here is the error I got for one of the Java servlet 1: 2008-09-30 02:36:50,915 | ERROR | [StandardWrapperValve:260 invoke | http-8881-Processor20] - Servlet.service() for servlet myServlet threw 2: exception 3: java.lang.NullPointerException 4: at javax.servlet.GenericServlet.getServletName(GenericServlet.java:322) 5: 6: The servlet is configured to be invoked upon certain URL pattern in web.xml. In other word, it will be called by the servlet container If you look at the JavaDoc