fix error.

src/submission/check_validity.py

@@ -14,6 +14,7 @@ from huggingface_hub import hf_hub_download, HfFileSystem
 from huggingface_hub.utils import validate_repo_id
 from pathlib import Path
 import fnmatch
+from huggingface_hub.hf_api import get_hf_file_metadata, hf_hub_url
 
 
 # ht to @Wauplin, thank you for the snippet!