Update app.py

app.py

@@ -4,14 +4,18 @@ import warnings
 from typing import List
 from operator import itemgetter
 from dotenv import load_dotenv
+from langfuse import Langfuse
+from langfuse.langchain import CallbackHandler
 
-from langfuse.callback import CallbackHandler
-langfuse_handler = CallbackHandler(
+langfuse = Langfuse(
     public_key="pk-lf-92e7e2eb-c5e0-4bbe-9c8d-1ebcb0f4f4cf",
     secret_key="sk-lf-5229e3b7-8f01-4d6e-a858-72c3ecb57dd3",
     host="https://cloud.langfuse.com"
 )
 
+langfuse_handler = CallbackHandler()
+
+
 import gradio as gr
 
 from langchain_openai import OpenAIEmbeddings