Error!!

java.lang.NullPointerException
	at com.fujitsu.iliswing.net.InetRefitiranOperation.getItiran(InetRefitiranOperation.java:123)
	at com.fujitsu.iliswing.net.InetOperation.getrefItiranData(InetOperation.java:4308)
	at com.fujitsu.iliswing.net.InetOperation.doCommon(InetOperation.java:894)
	at com.fujitsu.iliswing.opc.IopcOperation.doCommon(IopcOperation.java:203)
	at com.fujitsu.iliswing.opc.IopcServletWithoutEJB.doGet(IopcServletWithoutEJB.java:245)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:489)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:212)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:181)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:662)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:428)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:360)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:297)
	at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:735)
	at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:707)
	at org.apache.jsp.network.page.We_005ftosyokan_005friyo.jsp.InippouItiran_jsp._jspService(InippouItiran_jsp.java:286)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:465)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:383)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:331)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:212)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:181)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:662)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:428)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:360)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:297)
	at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:735)
	at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:707)
	at org.apache.jsp.network.page.We_005ftosyokan_005friyo.jsp.InippouItiranRequest_jsp._jspService(InippouItiranRequest_jsp.java:167)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:465)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:383)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:331)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:583)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:212)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:181)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:156)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:168)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:679)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:346)
	at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:535)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:934)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1690)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
	at java.base/java.lang.Thread.run(Thread.java:834)