Seems to be a java error somewhere, have you had any luck getting this to work?
Are you also on Manjaro / Arch linux???
I have the same issue, so far I've tried the flatpack version of FAF, the github maunal install, running from intellj
as well as wiping my system of java and FAF and re-installing. No luck...
Strongly considering firing up a windows VM just to play this stupid game..