Update app.py

app.py

@@ -1,6 +1,8 @@
 import os
 import requests
 import gradio as gr
+import langchain
+print(f"LangChain Version: {langchain.__version__}")
 # CRITICAL FIX: AgentExecutor is no longer in langchain_core.agents. 
 # It is now correctly imported from the 'langchain.agents' module in recent versions.
 from langchain.agents import AgentExecutor # <-- MODIFIED the import path