/usr/bin/PlopFolio is in plopfolio.app 0.1.0-7build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/../lib/GNUstep/Applications/PlopFolio.app/PlopFolio
/usr/bin/../lib/GNUstep/Applications/PlopFolio.app/PlopFolio