Update app.py

app.py

@@ -1,6 +1,7 @@
 import gradio as gr
 import pandas as pd
 import json
+import os
 from constants import LEADERBOARD_CSS, EXPLANATION, EXPLANATION_EDACC, EXPLANATION_AFRI
 from init import is_model_on_hub, upload_file, load_all_info_from_dataset_hub
 from utils_display import AutoEvalColumn, fields, make_clickable_model, styled_error, styled_message