gsh templates do not work on root stem

Carey Black  1:03 PM
FWIW: I can reproduce this error on my 2.6.8 QA server....
Grouper Demo server has a new GSH template on the root folder. "junk_test"
When I run it in the UI I get this error in the UI:
 Error: Cannot find group with name: 'null', Problem calling method customTemplateExecute on edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template
And there is a stack trace from the container ( on my side.. I assume on the demo server too...) that looks like this:
 
grouper-ui;grouper_error.log;${ENV};${USERTOKEN};2022-03-25T16:42:09,924: [ajp-nio-0.0.0.0-8009-exec-3] ERROR GrouperUiRestServlet.doGet(370) - [] - Problem calling reflection from URL: edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template.customTemplateExecute
edu.internet2.middleware.grouper.exception.GroupNotFoundException: Cannot find group with name: 'null',
Problem calling method customTemplateExecute on edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template
        at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3GroupDAO.findByName(Hib3GroupDAO.java:1184)
        at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3GroupDAO.findByName(Hib3GroupDAO.java:1146)
        at edu.internet2.middleware.grouper.GroupFinder.findByNameNoCache(GroupFinder.java:623)
        at edu.internet2.middleware.grouper.GroupFinder.findByName(GroupFinder.java:593)
        at edu.internet2.middleware.grouper.GroupFinder.findByName(GroupFinder.java:537)
        at edu.internet2.middleware.grouper.GroupFinder.findByName(GroupFinder.java:557)
        at edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template.customTemplateExecuteHelper(UiV2Template.java:491)
        at edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Template.customTemplateExecute(UiV2Template.java:425)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at edu.internet2.middleware.grouper.util.GrouperUtil.invokeMethod(GrouperUtil.java:5265)
        at edu.internet2.middleware.grouper.util.GrouperUtil.callMethod(GrouperUtil.java:5216)
        at edu.internet2.middleware.grouper.j2ee.GrouperUiRestServlet.doGet(GrouperUiRestServlet.java:337)
        at edu.internet2.middleware.grouper.j2ee.GrouperUiRestServlet.doPost(GrouperUiRestServlet.java:204)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
        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:52)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.owasp.csrfguard.CsrfGuardFilter.doFilter(CsrfGuardFilter.java:88)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at edu.internet2.middleware.grouper.ui.GrouperUiFilter.doFilter(GrouperUiFilter.java:1174)
        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:199)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
        at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
        at org.apache.tomee.catalina.OpenEJBSecurityListener$RequestCapturer.invoke(OpenEJBSecurityListener.java:97)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
        at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:524)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Thread.java:750)