Update app.py

app.py

@@ -29,7 +29,7 @@ from typing import Dict, Union, Any, List
 from langchain.callbacks.base import BaseCallbackHandler
 from langchain.schema import AgentAction
 from langchain.agents import AgentType, initialize_agent, load_tools
-from langchain.callbacks import tracing_enabled
+# from langchain.callbacks import tracing_enabled
 from langchain.llms import OpenAI
 from langchain.chat_models import ChatOpenAI
 from langchain import PromptTemplate