Update app.py

app.py

@@ -151,7 +151,7 @@ def talk(prompt, history):
     ]
 # indicates the end of a sequence
     text = ""
-    stream = model(messages, max_tokens=1000, stop=["</s>"], stream=True)
+    stream = model.create_chat_completion(messages, max_tokens=1000, stop=["</s>"], stream=True)
     for output in stream:
         text += output["choices"][0]["text"]
         yield text