Update challenges/vqa/page.py

challenges/vqa/page.py

@@ -4,6 +4,8 @@ from datetime import datetime, timezone
 import gradio as gr
 import pandas as pd
 
+import os
+
 from auth_utils import get_user_greeting, get_daily_cap_info
 from hf_utils import (
     _load_leaderboard_df,