Update app.py

app.py

@@ -6,7 +6,7 @@ import os
 import time
 import uuid
 import pathlib
-from datetime import datetime
+import datetime as dt
 from io import BytesIO
 from typing import Dict, List, Optional, Any
 from contextlib import asynccontextmanager
@@ -180,7 +180,7 @@ async def health():
 async def launch(request: BrowserLaunchRequest):
     """Launch a new browser instance"""
     session_id = str(uuid.uuid4())
-    ts_dir = VIDEO_ROOT / f"{datetime.datetime.utcnow():%Y%m%d_%H%M%S}_{session_id}"
+    ts_dir = VIDEO_ROOT / f"{dt.datetime.utcnow():%Y%m%d_%H%M%S}_{session_id}"
     ts_dir.mkdir(parents=True, exist_ok=True)
     
     try: