Fix returned variable

app.py

@@ -70,7 +70,7 @@ def get_dataset_files(dataset_name: str):
     dataset_path = get_dataset_path(dataset_name)
     fs, _ = fsspec.url_to_fs(dataset_path)
     dataset_files = fs.glob(f"{dataset_path}/**/*.hdf5")
-    return fs, dataset_files
+    return dataset_files
 
 
 @st.cache_data