Fix downloading file from s3

main.py

@@ -300,7 +300,9 @@ def replication(bnd_name: str, commit_id: str, schema: str):
             'bucket': x.bucket,
             'filename': x.fileName,
         })
-        download_file(x.key, x.bucket, os.path.join(z.dirname, x.key))
+        fp = os.path.join(z.dirname, x.key)
+        os.makedirs(os.path.dirname(fp), exist_ok=True)
+        download_file(x.key, x.bucket, fp)
     with open(os.path.join(z.dirname, 'export_files.json'), 'w') as f:
         f.write(json.dumps(exported_files))
     ws.clearData(True)