custom_overlay.css 302 not found

[nin0-0]

the bug

302 not found for custom_overlay.css but in folder ynhtheme ?

Context

on each page load it looks for this yunohost overlay css

I symlinked this now: ln -s /usr/share/ssowat/portal/assets/themes/vapor/custom_overlay.css /var/www/nextcloud/apps/files/custom_overlay.css

But it is centered in the middle on the right instead of down. Also I accidentally got it working, because I'd have to put it in ynhtheme folder normally? Maybe it's looking in multiple locations.