Update app.py

app.py

@@ -38,7 +38,7 @@ def chatbot_response(user_input, model_name):
         completion = client.chat.completions.create(
             model=model_id,
             messages=messages,
-            max_tokens=8192 if "Qwen" in model_id else 900,
+            max_tokens=8192 if "Qwen" in model_id else 900
         )
         response = completion.choices[0].message['content']
     except Exception as e:
@@ -80,8 +80,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
     def respond(message, chat_history, model_name):
         response = chatbot_response(message, model_name)
         response = clean_response(response)
-        chat_history.append({"role": "user", "content": message})
-        chat_history.append({"role": "assistant", "content": response})
+        chat_history.append((message, response))
         return "", chat_history
 
     btn.click(respond, [msg, chatbot, model_selector], [msg, chatbot])