Error: Unable to determine application name

[rei-vilo]

electron-packager-interactive fails, although all asked for parameters are answered, including the application name.

$ electron-packager-interactive
? Overwrite output directory ? Yes
? Use asar source packaging ? No
? Select Electron app source directory: /Users/USER/electron-node-red
? Select Electron app output directory: /Users/USER/Monitor
? Select Application name: Monitor
? Select App Bundle Id (optional):
? Select App Version(optional): 0.0.1
? Select Electron icon file: /Users/USER/Logos/All.icns
? Select Electron version release: 1.6.15
? Select platforms: darwin
? Select architecture: x64
Electron packager settings:
{ dir: '/Users/USER',
name: '',
platform: 'darwin',
arch: 'x64',
electronVersion: '1.6.15',
out: '/Users/USER/Monitor ',
appBundleId: '',
appVersion: '0.0.1',
overwrite: true,
asar: false,
icon: '/Users/USER/Logos/All.icns',
bundle_id: '',
appname: 'Monitor',
sourcedir: '/Users/USER/electron-node-red ',
ignore: '/Users/USER/Monitor ' }

✗ Error: Unable to determine application name. Please specify an application name

I'm targeting macOS darwin:x64.

However, running electron-packager succeeds with

$ electron-packager /Users/USER/electron-node-red Monitor --icon /Users/USER/Logos/All.icns
Packaging app for platform darwin x64 using electron v2.0.18
Wrote new app to /Users/USER/Monitor-darwin-x64

This issue has been reported earlier at electron/packager#639 and electron/packager#503

Any hint? Thank you!