<@aui.form> in Freemarker portlet throws ServletExceptions when portlet is displayed

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, Master
• Fix Version/s: 7.0.0 DXP FP41, 7.0.6 CE GA7, 7.0.0 DXP SP8, 7.0.X, 7.1.0 M1, 7.1.X, Master
• Component/s: Core Infrastructure
• Labels:
  • ee-ts
  • liferay-digital-enterprise-70-sp8
  • liferay-fixpack-de-41-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/55465

1. Deploy DXP
2. Deploy the attached dpm26-1.0.0.jar - this is a basic freemarker portlet with email, password, and sign in.
3. Add the portlet to the Welcome page and all should render fine without any errors.
4. Stop DXP and restart

Expectation: DXP should start up normally, render correctly, and no error logs.
Actual: DXP throws Servlet errors in the log and the portlet will not render correctly.

SEVERE [http-nio-8080-exec-2] org.apache.catalina.core.ApplicationDispatcher.invoke Servlet.service() for servlet jsp threw exception
 javax.servlet.ServletException: File [/html/taglib/aui/form/start.jsp/invoke] not found
	at org.apache.jasper.servlet.JspServlet.handleMissingResource(JspServlet.java:418)
...
at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53)
	at com.liferay.portlet.PortletContainerImpl._render(PortletContainerImpl.java:682)
	at com.liferay.portlet.PortletContainerImpl.render(PortletContainerImpl.java:145)
	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.layoutconfiguration.util.PortletRenderer._render(PortletRenderer.java:126)
	at com.liferay.portal.layoutconfiguration.util.PortletRenderer.render(PortletRenderer.java:73)
	at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.doProcessTemplate(RuntimePageImpl.java:444)
	at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.doDispatch(RuntimePageImpl.java:286)
	at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.processTemplate(RuntimePageImpl.java:113)
	at com.liferay.portal.layoutconfiguration.util.RuntimePageImpl.processTemplate(RuntimePageImpl.java:125)
	at com.liferay.portal.kernel.layoutconfiguration.util.RuntimePageUtil.processTemplate(RuntimePageUtil.java:70)
	at org.apache.jsp.html.portal.layout.view.portlet_jsp._jspService(portlet_jsp.java:755)
...
ERROR [http-nio-8080-exec-2][IncludeTag:128] Current URL /web/guest/home generates exception: File [/html/taglib/aui/form/start.jsp/invoke] not found
javax.servlet.ServletException: File [/html/taglib/aui/form/start.jsp/invoke] not found
	at org.apache.jasper.servlet.JspServlet.handleMissingResource(JspServlet.java:418)
...
ERROR [http-nio-8080-exec-3][IncludeTag:128] Current URL / generates exception: File [/html/taglib/aui/form/end.jsp/invoke] not found
javax.servlet.ServletException: File [/html/taglib/aui/form/end.jsp/invoke] not found
	at org.apache.jasper.servlet.JspServlet.handleMissingResource(JspServlet.java:418)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
...