fix with try-catch

apiserver/server.py

@@ -168,8 +168,11 @@ def _update_current_story(item):
 
     valid = feed.update_story(story, urlref=item['urlref'])
     if valid:
+        try:
             database.put_story(story)
             search.put_story(story)
+        except database.IntegrityError:
+            logging.info('Unable to add story with ref ' + ref)
     else:
         database.del_ref(item['ref'])
         logging.info('Removed ref {}'.format(item['ref']))