title: Liferay 7.2/7.3 error: 'PWC6033: Error in Javac compilation for JSP'
body: <p>When using the bundled version of Liferay 7.2 or 7.3 with Java version 11.0.6 (the Azul Zulu build, also happens with AdoptOpenJDK), I get the following error in the log file and can't sign in or see portlets. When clicking on 'Sign In', there is an error 'Sign In is temporarily unavailable.' preventing any login to the portal.</p>
  
  <pre><code>2020-03-05 11:23:05.743 ERROR [http-nio-8080-exec-10][PortletRequestDispatcherImpl:304] Unable to dispatch request: PWC6033: Error in Javac compilation for JSP
  2020-03-05 11:23:05.747 ERROR [http-nio-8080-exec-10][PortletServlet:119] javax.portlet.PortletException: org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP
  javax.portlet.PortletException: org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP
      at com.liferay.portlet.internal.PortletRequestDispatcherImpl.dispatch(PortletRequestDispatcherImpl.java:307)
      at com.liferay.portlet.internal.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:123)
      at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.include(MVCPortlet.java:572)
      at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.include(MVCPortlet.java:588)
      at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.doDispatch(MVCPortlet.java:462)
      at javax.portlet.GenericPortlet.render(GenericPortlet.java:291)
      at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.render(MVCPortlet.java:304)
      at com.liferay.portlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:127)
      at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:58)
      at com.liferay.portlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:124)
      at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:71)
      at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:115)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153)
      at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:62)
      at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:120)
      at org.eclipse.equinox.http.servlet.internal.servlet.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:48)
      at com.liferay.portlet.internal.InvokerPortletImpl.invoke(InvokerPortletImpl.java:571)
      at com.liferay.portlet.internal.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:661)
      at com.liferay.portlet.internal.InvokerPortletImpl.render(InvokerPortletImpl.java:344)
      at com.liferay.portal.monitoring.internal.portlet.MonitoringInvokerPortlet.lambda$render$0(MonitoringInvokerPortlet.java:259)
      at com.liferay.portal.monitoring.internal.portlet.MonitoringInvokerPortlet._render(MonitoringInvokerPortlet.java:363)
      at com.liferay.portal.monitoring.internal.portlet.MonitoringInvokerPortlet.render(MonitoringInvokerPortlet.java:257)
      at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(Unknown Source)
      at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:64)
      at com.liferay.portal.servlet.DirectRequestDispatcherFactoryImpl$IndirectRequestDispatcher.include(DirectRequestDispatcherFactoryImpl.java:190)
      at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:79)
      at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53)
      at com.liferay.portal.servlet.TransferHeadersHelperImpl$TransferHeadersRequestDispatcher.include(TransferHeadersHelperImpl.java:162)
      at com.liferay.portlet.internal.PortletContainerImpl._render(PortletContainerImpl.java:908)
      at com.liferay.portlet.internal.PortletContainerImpl.lambda$render$2(PortletContainerImpl.java:223)
      at com.liferay.portlet.internal.PortletContainerImpl._preserveGroupIds(PortletContainerImpl.java:425)
      at com.liferay.portlet.internal.PortletContainerImpl.render(PortletContainerImpl.java:211)
      at com.liferay.portlet.SecurityPortletContainerWrapper.render(SecurityPortletContainerWrapper.java:145)
      at com.liferay.portlet.RestrictPortletContainerWrapper.lambda$render$0(RestrictPortletContainerWrapper.java:128)
      at com.liferay.portlet.RestrictPortletContainerWrapper._render(RestrictPortletContainerWrapper.java:189)
      at com.liferay.portlet.RestrictPortletContainerWrapper.render(RestrictPortletContainerWrapper.java:126)
      at com.liferay.portal.kernel.portlet.PortletContainerUtil.render(PortletContainerUtil.java:215)
      at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:401)
      at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:170)
      at com.liferay.portal.struts.PortalRequestProcessor._process(PortalRequestProcessor.java:415)
      at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:155)
      at com.liferay.portal.internal.servlet.MainServlet.doGet(MainServlet.java:205)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
      at com.liferay.portal.internal.servlet.MainServlet.service(MainServlet.java:622)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:124)
      at com.liferay.portal.servlet.filters.password.modified.PasswordModifiedFilter.processFilter(PasswordModifiedFilter.java:62)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.servlet.filters.secure.BaseAuthFilter.processFilter(BaseAuthFilter.java:340)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.monitoring.internal.servlet.filter.MonitoringFilter.processFilter(MonitoringFilter.java:183)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:104)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
      at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
      at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
      at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
      at com.liferay.friendly.url.internal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:409)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at com.liferay.portal.servlet.ServletAdapter.service(ServletAdapter.java:99)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:124)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:368)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.servlet.filters.password.modified.PasswordModifiedFilter.processFilter(PasswordModifiedFilter.java:62)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.servlet.filters.secure.BaseAuthFilter.processFilter(BaseAuthFilter.java:340)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.servlet.filters.etag.ETagFilter.processFilter(ETagFilter.java:87)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:264)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:249)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:147)
      at com.liferay.portal.monitoring.internal.servlet.filter.MonitoringFilter.processFilter(MonitoringFilter.java:183)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:196)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:196)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99)
      at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
      at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
      at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)
      at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)
      at com.liferay.portal.servlet.filters.urlrewrite.UrlRewriteFilter.processFilter(UrlRewriteFilter.java:65)
      at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:49)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:215)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:175)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:175)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:196)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:99)
      at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:104)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
      at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
      at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
      at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
      at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415)
      at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
      at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
      at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.base/java.lang.Thread.run(Thread.java:834)
  Caused by: org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP
      at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:655)
      at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
      at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473)
      at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
      at com.liferay.portal.osgi.web.servlet.jsp.compiler.internal.JspServlet.service(JspServlet.java:373)
      at com.liferay.portal.osgi.web.servlet.jsp.compiler.internal.JspServlet.service(JspServlet.java:385)
      at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153)
      at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:62)
      at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:120)
      at org.eclipse.equinox.http.servlet.internal.servlet.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:48)
      at com.liferay.portlet.internal.PortletRequestDispatcherImpl.dispatch(PortletRequestDispatcherImpl.java:291)
      ... 160 more
  Caused by: java.lang.RuntimeException: java.lang.NullPointerException: entry
      at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:163)
      at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
      at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
      at com.liferay.portal.osgi.web.servlet.jsp.compiler.internal.JspCompiler.compile(JspCompiler.java:126)
      at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:384)
      at org.apache.jasper.compiler.Compiler.compile(Compiler.java:453)
      at com.liferay.portal.osgi.web.servlet.jsp.compiler.internal.CompilerWrapper.compile(CompilerWrapper.java:74)
      at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:645)
      ... 171 more
  Caused by: java.lang.NullPointerException: entry
      at java.base/java.util.Objects.requireNonNull(Objects.java:246)
      at java.base/java.util.zip.ZipFile.getInputStream(ZipFile.java:372)
      at com.liferay.portal.kernel.zip.ZipFileUtil.openInputStream(ZipFileUtil.java:36)
      at com.liferay.portal.osgi.web.servlet.jsp.compiler.internal.JarJavaFileObject.openInputStream(JarJavaFileObject.java:39)
      at jdk.compiler/com.sun.tools.javac.api.ClientCodeWrapper$WrappedFileObject.openInputStream(ClientCodeWrapper.java:592)
      at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:2820)
      at jdk.compiler/com.sun.tools.javac.code.ClassFinder.fillIn(ClassFinder.java:359)
      at jdk.compiler/com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:291)
      at jdk.compiler/com.sun.tools.javac.code.Symbol.complete(Symbol.java:642)
      at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1326)
      at jdk.compiler/com.sun.tools.javac.code.ClassFinder.loadClass(ClassFinder.java:433)
      at jdk.compiler/com.sun.tools.javac.comp.Resolve.loadClass(Resolve.java:1996)
      at jdk.compiler/com.sun.tools.javac.comp.Resolve.findIdentInPackageInternal(Resolve.java:2386)
      at jdk.compiler/com.sun.tools.javac.comp.Resolve.findIdentInPackage(Resolve.java:2374)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3716)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3601)
      at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2114)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:655)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.attribType(Attr.java:715)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.attribType(Attr.java:708)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.attribImportType(TypeEnter.java:441)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.doImport(TypeEnter.java:424)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.resolveImports(TypeEnter.java:364)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$ImportsPhase.runPhase(TypeEnter.java:321)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$Phase.doCompleteEnvs(TypeEnter.java:282)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter$Phase.completeEnvs(TypeEnter.java:251)
      at jdk.compiler/com.sun.tools.javac.comp.TypeEnter.complete(TypeEnter.java:198)
      at jdk.compiler/com.sun.tools.javac.code.Symbol.complete(Symbol.java:642)
      at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1326)
      at jdk.compiler/com.sun.tools.javac.comp.Enter.complete(Enter.java:583)
      at jdk.compiler/com.sun.tools.javac.comp.Enter.main(Enter.java:560)
      at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:1066)
      at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:937)
      at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
      at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)
      ... 178 more
  2020-03-05 11:23:05.771 ERROR [http-nio-8080-exec-10][render_portlet_jsp:131] null
  java.lang.NullPointerException: entry
      at java.base/java.util.Objects.requireNonNull(Objects.java:246)
      at java.base/java.util.zip.ZipFile.getInputStream(ZipFile.java:372)
      at com.liferay.portal.kernel.zip.ZipFileUtil.openInputStream(ZipFileUtil.java:36)
      at com.liferay.portal.osgi.web.servlet.jsp.compiler.internal.JarJavaFileObject.openInputStream(JarJavaFileObject.java:39)
      at jdk.compiler/com.sun.tools.javac.api.ClientCodeWrapper$WrappedFileObject.openInputStream(ClientCodeWrapper.java:592)
      at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:2820)
      at jdk.compiler/com.sun.tools.javac.code.ClassFinder.fillIn(ClassFinder.java:359)
      at jdk.compiler/com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:291)
      at jdk.compiler/com.sun.tools.javac.code.Symbol.complete(Symbol.java:642)
      at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1326)
      at jdk.compiler/com.sun.tools.javac.code.ClassFinder.loadClass(ClassFinder.java:433)
      at jdk.compiler/com.sun.tools.javac.comp.Resolve.loadClass(Resolve.java:1996)
      at jdk.compiler/com.sun.tools.javac.comp.Resolve.findIdentInPackageInternal(Resolve.java:2386)
      at jdk.compiler/com.sun.tools.javac.comp.Resolve.findIdentInPackage(Resolve.java:2374)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3716)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3601)
      at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2114)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.attribTree(Attr.java:655)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.attribType(Attr.java:715)
      at jdk.compiler/com.sun.tools.javac.comp.Attr.attribType(Attr.java:708)
  </code></pre>
  
  <p>Any idea why this is happening and how it can be resolved?</p>
  
  <p>Thanks</p>