slapos_jio: do not crash when using a zope user

master/bt5/slapos_jio/SkinTemplateItem/portal_skins/slapos_hal_json_style/Base_getAttentionPointList.py

@@ -47,6 +47,9 @@ if portal_type in ["Instance Tree Module", "Instance Tree", "Person"] and \
   portal.portal_preferences.getPreferredCloudContractEnabled():
 
   person = portal.portal_membership.getAuthenticatedMember().getUserValue()
+  if person is None:
+    contract = None
+  else:
     contract = portal.portal_catalog.getResultValue(
       portal_type="Cloud Contract",
       default_destination_section_uid=person.getUid(),