Mail portlet (modules/apps/deprecated) doesn't work, it throws an error due to a JSP compilation failure when adding to a page:
01:14:45,319 ERROR [http-bio-8080-exec-7][PortletRequestDispatcherImpl:261] org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP__PWC6199: Generated servlet error:_cannot find symbol_ symbol: class MailConstants_ location: package com.liferay.mail.util__PWC6199: Generated servlet error:_cannot find symbol_ symbol: class MailManager_ location: package com.liferay.mail.util__PWC6199: Generated servlet error:_cannot find symbol_ symbol: class PortletPropsValues_ location: package com.liferay.mail.util__PWC6197: An error occurred at line: 19 in the jsp file: /view.jsp_PWC6199: Generated servlet error:_cannot find symbol_ symbol: class MailManager_ location: class org.apache.jsp.view_jsp__PWC6197: An error occurred at line: 19 in the jsp file: /view.jsp_PWC6199: Generated servlet error:_cannot find symbol_ symbol: variable MailManager_ location: class org.apache.jsp.view_jsp__ [Sanitized] org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP__PWC6199: Generated servlet error:_cannot find symbol_ symbol: class MailConstants_ location: package com.liferay.mail.util__PWC6199: Generated servlet error:_cannot find symbol_ symbol: class MailManager_ location: package com.liferay.mail.util__PWC6199: Generated servlet error:_cannot find symbol_ symbol: class PortletPropsValues_ location: package com.liferay.mail.util__PWC6197: An error occurred at line: 19 in the jsp file: /view.jsp_PWC6199: Generated servlet error:_cannot find symbol_ symbol: class MailManager_ location: class org.apache.jsp.view_jsp__PWC6197: An error occurred at line: 19 in the jsp file: /view.jsp_PWC6199: Generated servlet error:_cannot find symbol_ symbol: variable MailManager_ location: class org.apache.jsp.view_jsp__ [Sanitized] at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:129) at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:299) at org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:392) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:453) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:625) 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:731) at com.liferay.portal.osgi.web.servlet.jsp.compiler.JspServlet.service(JspServlet.java:376) at com.liferay.portal.osgi.web.servlet.jsp.compiler.JspServlet.service(JspServlet.java:387) at com.liferay.portal.osgi.web.servlet.context.helper.internal.JspServletWrapper.service(JspServletWrapper.java:70) at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153) at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:50) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:119) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:115) at com.liferay.portal.osgi.web.wab.extender.internal.adapter.FilterExceptionAdapter.doFilter(FilterExceptionAdapter.java:46) at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:121) at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:45) at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:70) at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:119) at org.eclipse.equinox.http.servlet.internal.servlet.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:48) at com.liferay.portlet.PortletRequestDispatcherImpl.dispatch(PortletRequestDispatcherImpl.java:252) at com.liferay.portlet.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:102) at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.include(MVCPortlet.java:556) at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.include(MVCPortlet.java:572) at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.doView(MVCPortlet.java:157) at com.liferay.portal.kernel.portlet.LiferayPortlet.doDispatch(LiferayPortlet.java:302) at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.doDispatch(MVCPortlet.java:471) at javax.portlet.GenericPortlet.render(GenericPortlet.java:262) at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.render(MVCPortlet.java:291) at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:103) at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:57) at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:100) at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:64) at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:105) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at com.liferay.portal.osgi.web.wab.extender.internal.adapter.ServletExceptionAdapter.service(ServletExceptionAdapter.java:68) at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153) at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:50) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:119) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:115) at com.liferay.portal.osgi.web.wab.extender.internal.adapter.FilterExceptionAdapter.doFilter(FilterExceptionAdapter.java:46) at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:121) at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:45) at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:70) at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:119) at org.eclipse.equinox.http.servlet.internal.servlet.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:48) at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:529) at com.liferay.portlet.InvokerPortletImpl.invokeRender(InvokerPortletImpl.java:604) at com.liferay.portlet.InvokerPortletImpl.render(InvokerPortletImpl.java:391) at com.liferay.portal.monitoring.internal.portlet.MonitoringInvokerPortlet.render(MonitoringInvokerPortlet.java:261) at org.apache.jsp.html.portal.render_005fportlet_jsp._jspService(render_005fportlet_jsp.java:1254) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at com.liferay.portal.servlet.DirectRequestDispatcher.include(DirectRequestDispatcher.java:64) at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78) at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53) at com.liferay.portlet.PortletContainerImpl._doRender(PortletContainerImpl.java:670) at com.liferay.portlet.PortletContainerImpl.render(PortletContainerImpl.java:144) at com.liferay.portlet.SecurityPortletContainerWrapper.render(SecurityPortletContainerWrapper.java:126) at com.liferay.portlet.RestrictPortletContainerWrapper.render(RestrictPortletContainerWrapper.java:126) at com.liferay.portal.kernel.portlet.PortletContainerUtil.render(PortletContainerUtil.java:155) at com.liferay.portal.action.RenderPortletAction.execute(RenderPortletAction.java:112) at com.liferay.portal.action.UpdateLayoutAction.addPortlet(UpdateLayoutAction.java:317) at com.liferay.portal.action.UpdateLayoutAction.getJSON(UpdateLayoutAction.java:268) at com.liferay.portal.struts.JSONAction.execute(JSONAction.java:76) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:169) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:569) at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:546) at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:119) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.monitoring.internal.servlet.filter.MonitoringFilter.processFilter(MonitoringFilter.java:180) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.security.sso.ntlm.internal.servlet.filter.NtlmPostFilter.processFilter(NtlmPostFilter.java:107) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.servlet.filters.uploadservletrequest.UploadServletRequestFilter.processFilter(UploadServletRequestFilter.java:93) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.servlet.filters.strip.StripFilter.processFilter(StripFilter.java:336) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:125) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:301) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:142) at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:260) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96) 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:394) at com.liferay.portal.servlet.filters.urlrewrite.UrlRewriteFilter.processFilter(UrlRewriteFilter.java:65) at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:48) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:207) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:112) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:168) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:168) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:188) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96) at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:115) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745)
Originally reported in forums: https://web.liferay.com/community/forums/-/message_boards/message/74033317