Update app.py

app.py

@@ -7,7 +7,9 @@ import uuid
 import json
 import re
 import os
-fs = HfFileSystem()
+access_token=os.environ['HF_TOKEN']
+
+fs = HfFileSystem(token=access_token)
 
 loc_folder="chat_history"
 loc_file="chat_json"