Fix response content

app.py

@@ -17,7 +17,8 @@ def get_parquet_files(dataset, config, split):
         if response.status_code != 200:
             raise Exception(response)
         
-        parquet_files = response.json()
+        response = response.json()
+        parquet_files = response["parquet_files"]
         file_names = [content["filename"] for content in parquet_files if content["split"] == split]
         if len(file_names) == 0:
              raise Exception("No parquet files found for dataset")