• In scripts/upload.py, the long options are defined as -path and -url, which argparse does not treat as valid long options. They should be--path and --url.

• In exporter.py, the logger call concatenates a string with an exception object:
  logger.error("export failed: " + ex)

  This can raise a TypeError if ex is not a string.

If this seems reasonable, I would start a PR to address these.