Created attachment 788012 [details]
ErrorInPortlet

1. Log in as root
2. Site - Manage Sites - Add New Portal
3. Edit navigation - Add Node - add node with some selected page, I added e.g. "groupnavgation"
4. Go to this site - Site Editor - Edit Layout - Move Footer Portlet between Banner Portlet and Navigation Portlet - Finish
5. Group - Administration - Site Redirects And Export/Import - export created site
6. delete Site in Site - Manage Sites
7. Group - Administration - Site Redirects And Export/Import - import this site, reload page
8. Your site appears in Sites menu, go to the site - when you click the created node, there is the selected page - when you try to edit this page (Site Editor - Edit Page), and Finish e.g. just with no changes, there is few times error "This portlet encountered an error and could not be displayed"
When you click the Home page of this created and imported site, the Edit Page is even not possible, the "Unknown Error" appears




There are errors in log:

ERROR [portal:UIPortletLifecycle] (http-/0.0.0.0:8080-2) Portlet render threw an exception: org.exoplatform.services.portletcontainer.PortletContainerException: org.exoplatform.portal.config.NoSuchDataException: Can not find 964a02b47f00000113ab1e5b0066cdfc
	at org.exoplatform.portal.webui.application.UIPortletLifecycle.processRender(UIPortletLifecycle.java:197) [exo.portal.webui.portal-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.exoplatform.portal.webui.application.UIPortletLifecycle.processRender(UIPortletLifecycle.java:54) [exo.portal.webui.portal-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.exoplatform.webui.core.UIComponent.processRender(UIComponent.java:128) [exo.portal.webui.framework-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
...

13:19:42,450 ERROR [portal:UIPortalApplication] (http-/0.0.0.0:8080-2) Error during the processAction phase: org.exoplatform.portal.config.NoSuchDataException: Can not find 964a02bc7f0000014000618e6934d953
	at org.exoplatform.portal.pom.config.POMSession.findCustomizationById(POMSession.java:183) [exo.portal.component.portal-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.exoplatform.portal.pom.config.tasks.PreferencesTask$GetContentId.run(PreferencesTask.java:47) [exo.portal.component.portal-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.exoplatform.portal.pom.config.tasks.PreferencesTask$GetContentId.run(PreferencesTask.java:37) [exo.portal.component.portal-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.exoplatform.portal.pom.config.POMSession.execute(POMSession.java:301) [exo.portal.component.portal-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
...