Maybe your jarsigner path?
when I use manjaro, link was set like /usr/~
(screenshot on ubuntu, but similar path i know)
(I always use like that path on linux: ubuntu, arch linux, manjaro)
and I remember it install from pacman or pamac
'sudo pacman -S openjdk-jdk8' or something :0
I know it's not that different as your setting
but it's linux, so just in case
Good luck !