Update app.py

app.py

@@ -484,7 +484,7 @@ def main():
 
         response, is_idk = bot.respond(message, history, current_user_name)
         response_text = response[0]
-        if len(response<2):
+        if len(response)<2:
             scores = ["no_data","no_data"]
         scores = response[1]