undefined is not an object (evaluating 'user.username')

[llamasking]

This issue is a near duplicate issue to #65 with the only difference I see being that I get a different error. I suspect that I am missing some dependency, however I have no idea what it is. Similarly to that issue, I have no glx issues.

Running in test mode yields the following errors, which are also logged in seat0-greeter.log:
file:///usr/share/lightdm-webkit/themes/lightdm-webkit-theme-aether/dist/js/Aether.js:29:636830: CONSOLE ERROR TypeError: undefined is not an object (evaluating 'user.username') file:///usr/share/lightdm-webkit/themes/lightdm-webkit-theme-aether/dist/js/Aether.js:29:635943: CONSOLE ERROR TypeError: undefined is not an object (evaluating 'user.username')

[versipelis]

I have the same issue currently trying to get the theme running on arch Linux with xfce4 and lightdm. Any suggestions here I don't know what I'm currently missing here.