Update agent.py

agent.py

@@ -152,6 +152,7 @@ import requests
 import mimetypes
 from PIL import Image
 from langchain_core.tools import tool
+from dataclasses import dataclass, field
 # from langchain.chat_models import ChatOpenAI
 # from langchain_community.chat_models import ChatOpenAI
 # from langchain.chat_models import ChatOpenAI