Error: Array is empty

[Abel1603]

Upon clicking "Existing User", or "New User" button.
I run the debian app on arch linux. The app launches. Following it provides the option to create a new or existing user, by presenting two buttons in the gui. When I click one of the buttons, it throws an Error "Array is empty". The only option left afterward is to kill the app.
Environment: I have converted the debian download from the sphinx-website to a pacman package with "Debtap", a conversion script. The pacman package has the following dependencies: expat, xdb-utils, zlib.