Update query.py

query.py

@@ -157,7 +157,7 @@ class VectaraQuery():
             if line:  # filter out keep-alive new lines
                 data = json.loads(line.decode('utf-8'))
                 res = data['result']
-                
+                response_set = res['responseSet']                
                 if response_set is None:
                     # grab next chunk and yield it as output
                     summary = res.get('summary', None)