Error: org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: [9] in the jsp file: [/ReportDefinitionCache_auto.jsp]
The method instance() is undefined for the type ReportDefinitionCache
6: <%@ page import="com.hof.mi.olap.*" %>
7: <%@ page import="com.hof.mi.util.*" %>
8: <% 
9: ReportDefinitionCache.instance().clear(); 
10: %>
11: 
12:      <h2>Report Definition Cache:</h2>


Stacktrace:
At:
      org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)
      org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:212)
      org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:495)
      org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
      org.apache.jasper.compiler.Compiler.compile(Compiler.java:350)
      org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
      org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595)
      org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
      org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
      org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
      org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
      org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
      org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      com.hof.servlet.BrowserHeaderFilter.doFilter(BrowserHeaderFilter.java:43)
      org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
      org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
      org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
      org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
      org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
      org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
      org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
      org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
      org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
      org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
      org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
      org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
      org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
      java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      java.lang.Thread.run(Thread.java:745)