Update app.py

app.py

@@ -12,7 +12,7 @@ def respond(message, history):
     response = client.chat_completion(messages, max_tokens = 100)
 
     
-    return response["choices"][o]["message"]["content"].strip()
+    return response["choices"][0]["message"]["content"].strip()
     
 
 def random_message  (message, history):