$ gphotos-sync download /mnt/Shanghai/Google\ Photos/
/usr/local/lib/python2.7/dist-packages/oauth2client/_helpers.py:255: UserWarning: Cannot access /home/andreas/.local/share/gphotos-sync/credentials.json: No such file or directory
  warnings.warn(_MISSING_FILE_MESSAGE.format(filename))
Go to the following link in your browser:
()
    https://accounts.google.com/o/oauth2/auth?redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob&response_type=code&client_id=xxxxxxxxxxxxxx-xxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fdrive&approval_prompt=force&access_type=offline
()
Enter verification code: x/mycodemycodemycodemycodemycode
Authentication successful.
Traceback (most recent call last):
  File "/usr/local/bin/gphotos-sync", line 398, in <module>
    download_command(googlePhotosSync, args)
  File "/usr/local/bin/gphotos-sync", line 326, in download_command
    for remote_media in googlePhotosSync.get_remote_medias():
  File "/usr/local/bin/gphotos-sync", line 206, in get_remote_medias
    googlePhotosFolderId = self._get_photos_folder_id()
  File "/usr/local/bin/gphotos-sync", line 203, in _get_photos_folder_id
    raise NoGooglePhotosFolderError()
__main__.NoGooglePhotosFolderError