Update app.py

app.py

@@ -31,7 +31,7 @@ def chatbot_mistral(messages:list,systemt_prompt=""):
     }
     
     # create a chat completion
-    for chunk in openai.ChatCompletion.create(model="dewu-chat",messages=messages,extra_body=call_args):
+    for chunk in client.chat.completions.create(model="dewu-chat",messages=messages,extra_body=call_args):
         if hasattr(chunk.choices[0].delta, "content"):
             response = chunk.choices[0].delta.content
             yield response