in that white space it should show you a project created by you whit version of unreal requre by asset to download if i install various versions of unreal engine and create a white project on each off it i think it is linux asking for something
Spruce Forest version 4.19 - 4.27, 5.0 is not baad asset they only need a cut out of the leaves transparecy and smal smoot
i google for you som stuff but for what I understand linux has too many problems they are all unexplored waters
Off Line windows PC is the only wey
if you download everything from google that locks work and try normaly you can solve 95% off problems
because if you have a problem you can bet a ship full of grain that you are not the first to have this problem bread crumbs on the right path