No such file or directory: 'client_secret.json'

[praseodym]

With v0.9.3, gmail-yaml-filters seems to expect client credentials even though I'm just using it to convert YAML to XML:

> pip3 install -U gmail-yaml-filters
> gmail-yaml-filters filters.yaml > filters.xml
/home/mark/.local/lib/python3.8/site-packages/oauth2client/_helpers.py:255: UserWarning: Cannot access /home/mark/.credentials/gmail_yaml_filters.json: No such file or directory
  warnings.warn(_MISSING_FILE_MESSAGE.format(filename))
Traceback (most recent call last):
  File "/home/mark/.local/lib/python3.8/site-packages/oauth2client/clientsecrets.py", line 121, in _loadfile
    with open(filename, 'r') as fp:
FileNotFoundError: [Errno 2] No such file or directory: 'client_secret.json'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/mark/.local/bin/gmail-yaml-filters", line 8, in <module>
    sys.exit(main())
  File "/home/mark/.local/lib/python3.8/site-packages/gmail_yaml_filters/main.py", line 93, in main
    credentials = get_gmail_credentials(client_secret_path=args.client_secret)
  File "/home/mark/.local/lib/python3.8/site-packages/gmail_yaml_filters/upload.py", line 275, in get_gmail_credentials
    flow = oauth2client.client.flow_from_clientsecrets(client_secret_path, scopes)
  File "/home/mark/.local/lib/python3.8/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/home/mark/.local/lib/python3.8/site-packages/oauth2client/client.py", line 2134, in flow_from_clientsecrets
    client_type, client_info = clientsecrets.loadfile(filename,
  File "/home/mark/.local/lib/python3.8/site-packages/oauth2client/clientsecrets.py", line 165, in loadfile
    return _loadfile(filename)
  File "/home/mark/.local/lib/python3.8/site-packages/oauth2client/clientsecrets.py", line 124, in _loadfile
    raise InvalidClientSecretsError('Error opening file', exc.filename,
oauth2client.clientsecrets.InvalidClientSecretsError: ('Error opening file', 'client_secret.json', 'No such file or directory', 2)

The previous version (pip3 install -U gmail-yaml-filters==0.9.2) works fine.

[mesozoic]

Thanks for the bug report! This has been fixed in v0.9.4.