Hello all, i had yesterday the same Problem as others, Miniongg would not start and it shows an error:
Error: Main class gg.minion.Minion could not be found or loaded
I use Manjaro Linux and i use the aur package.
I found out that Miniongg needs as dependencies: java8-openjfx
to build this it needs python2. I edit the packagebuild from java8-openjfx and delete python2 from the list and build the package, than i install miniongg again
Now i can start miniongg and it works as it should