Modify the variable name of token

app.py

@@ -722,7 +722,9 @@ def clear_inputs():
 
 
 example_data = datasets.load_dataset(
-    "AI-MO/kaggle-validation-set-medium-extended", split="train", use_auth_token=os.environ.get("HF_TOKEN", None)
+    "AI-MO/kaggle-validation-set-medium-extended",
+    split="train",
+    use_auth_token=os.environ.get("HF_DATASET_TOKEN", None),
 )