Update main.py

main.py

@@ -372,7 +372,7 @@ async def get_answer_with_chat_history(llm: str, question: Question):
     return response
 
 # Set ngrok binary path
-ngrok.set_bin_dir(os.path.expanduser("~"))
+ngrok.set_ngrok_path(os.path.expanduser("~/.ngrok2/ngrok"))
 
 # Set ngrok authentication token
 ngrok.set_auth_token(os.environ['NGROK_AUTHTOKEN'])