do not abort on server error

themis/importexport/sync.py

@@ -207,7 +207,11 @@ class SyncFromThemis(UtilityView):
 
         for count, document_url in enumerate(documents):
             log.info('loading %s' % document_url)
-            data = json.load(self.urlopen('%s/json' % document_url))
+            try:
+                data = json.load(self.urlopen('%s/json' % document_url))
+            except urllib2.HTTPError as e:
+                logging.info('failed to load (%r)' % e)
+                continue
 
             new_id = data.get('id')
             is_question = False