HTTP Status 500 – Internal Server Error


Type Exception Report

Message Unable to compile class for JSP:

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

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

An error occurred at line: [21] in the jsp file: [/WEB-INF/jsp/forum/archive-index.jsp]
The method queryAllValidArchivalMonths(String) is undefined for the type ForumDAO
18:     String viewerIp = request.getRemoteAddr();
19: 
20:     List<Map.Entry<Integer, List<ArchivalMonth>>> list = Lists.newArrayList(
21:             ArchivalMonth.indexedByYear(dao.queryAllValidArchivalMonths(viewerIp)).entrySet());
22:     list.sort(Comparator.comparingInt(e -> -e.getKey()));
23:     for (Map.Entry<Integer, List<ArchivalMonth>> entry : list) {
24:         entry.getValue().sort(ArchivalMonth::compareTo);


Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
	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.init(JspServlet.java:139)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)
	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:1149)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Thread.java:748)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/8.5.39 (Ubuntu)