Application Error

java.lang.NullPointerException
java.lang.NullPointerException at java.lang.StringBuffer.(StringBuffer.java:130) at _jsp._interviewSeriesList._jspService(_interviewSeriesList.java:80) at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:350) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:824) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330) at com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:222) at com.aha.qc.servlets.MoreInterviewsServlet.doPost(MoreInterviewsServlet.java:144) at com.aha.qc.servlets.MoreInterviewsServlet.doGet(MoreInterviewsServlet.java:45) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65) at org.aha.oam.QCSession.doFilter(QCSession.java:123) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:663) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:224) at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:133) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192) at java.lang.Thread.run(Thread.java:534)