java.lang.IllegalArgumentException: Both name and value cannot be null
	at com.broadvision.servlet.BVHttpSession.setAttribute(BVHttpSession.java:823)
	at com.irctc.action.RegisterAction.perform(RegisterAction.java:1156)
	at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:700)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:583)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:141)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at com.broadvision.servlet.ServletContainer.service(ServletContainer.java:404)
	at com.broadvision.servlet.ServletContainer.processRequest(ServletContainer.java:348)
	at com.broadvision.servlet.ServletContextContainer.processRequest(ServletContextContainer.java:819)
	at com.broadvision.servlet.BVServletEngine.service(BVServletEngine.java:246)
	at com.broadvision.servlet.BVServletConnector.service(BVServletConnector.java:141)