Update main.py

main.py

@@ -4,7 +4,7 @@ import json
 import re
 import requests
 import builtins
-from typing import Optional, Any, Dict, List
+from typing import Optional, Any, Dict, List, Tuple
 from contextlib import asynccontextmanager
 from fastapi import FastAPI, HTTPException
 from fastapi.middleware.cors import CORSMiddleware