[Fix] add check if cached files have been saved

src/dataloading.py

@@ -10,7 +10,10 @@ def get_leaderboard_models():
     api = HfApi()
 
     # Load prechecked models
-    ungated_models = set(line.strip() for line in open("models.txt"))
+    try:
+        ungated_models = set(line.strip() for line in open("models.txt"))
+    except FileNotFoundError:
+        ungated_models = set()
     
     # List all datasets in the open-llm-leaderboard organization
     dataset_list = api.list_datasets(author="open-llm-leaderboard")