Update app.py

app.py

@@ -121,13 +121,14 @@ def chat():
             message = user_message
 
         prompt = format_chat_prompt(message, chat_history, instructions)
-        chat_history = chat_history + [[message, ""]]
         model_output = run_model(
             prompt,
             temperature=temperature,
             top_p=top_p,
         )
-        yield model_output
+        chat_history = chat_history + [[message, model_output]]
+        yield chat_history
+        return
         # acc_text = ""
         # for idx, response in enumerate(stream):
         #     text_token = response.token.text