Rest service does not return anything on keys and column for categorized view when upgrading from FP6 to FP8

I am working in an application where I did a search and passed "searchKeys" to url via Rest Service xpage.

In fix pack 6, I get the expected results, but the same application configured on a server with Feature Pack 8, keys in the Rest service just don't return anything, and in a categorized view, I update the value of the categorized columns, which returns a null pointer.

If I try to get the results broken down by category, I get the error

{
    "code":500,
    "text":"Interner Fehler",
    "message":"",
    "type":"text",
    "data":"java.lang.NullPointerException\r\n\tat com.ibm.domino.services.rest.das.view.RestViewNavigatorFactory$ViewNavigatorNavigator.getTopLevelEntryCount(RestViewNavigatorFactory.java:644)\r\n\tat com.ibm.domino.services.rest.das.view.RestViewNavigatorFactory$SearchKeyNavigatorNavigator.getTopLevelEntryCount(RestViewNavigatorFactory.java:581)\r\n\tat com.ibm.domino.services.rest.das.view.RestViewItemFileService.renderServiceJSONGet(RestViewItemFileService.java:263)\r\n\tat com.ibm.domino.services.rest.das.view.RestViewItemFileService.renderService(RestViewItemFileService.java:77)\r\n\tat com.ibm.domino.services.HttpServiceEngine.processRequest(HttpServiceEngine.java:168)\r\n\tat com.ibm.xsp.extlib.component.rest.UIBaseRestService._processAjaxRequest(UIBaseRestService.java:257)\r\n\tat com.ibm.xsp.extlib.component.rest.UIBaseRestService.processAjaxRequest(UIBaseRestService.java:234)\r\n\tat com.ibm.xsp.util.AjaxUtilEx.renderAjaxPartialLifecycle(AjaxUtilEx.java:206)\r\n\tat com.ibm.xsp.webapp.FacesServletEx.renderAjaxPartial(FacesServletEx.java:249)\r\n\tat com.ibm.xsp.webapp.FacesServletEx.serviceAjaxPartialView(FacesServletEx.java:200)\r\n\tat com.ibm.xsp.webapp.FacesServletEx.serviceAjaxPartialViewSync(FacesServletEx.java:169)\r\n\tat com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:155)\r\n\tat com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:159)\r\n\tat com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)\r\n\tat com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)\r\n\tat com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:588)\r\n\tat com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335)\r\n\tat com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:865)\r\n\tat com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:808)\r\n\tat com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:577)\r\n\tat com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319)\r\n\tat com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662)\r\n\tat com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482)\r\n\tat com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357)\r\n\tat com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313)\r\n\tat com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)\r\n"
}

      

        
        
        
      

    

In the case of searching for Keys in Rest Service, the error is simply Empty

  {
"@timestamp":"2017-12-11T12:24:41Z",
"@toplevelentries":1799,
"items":
[
]
}

      

        
        
        
      

    

Note. The same works with FP6, but Dont works with FP8