[Thunar-dev] problems with 'thunar-volman'

[Francesco]

Good evening, i'm using Xfce 4.14 on FreeBSD 12.1 and i can't install the thunar-volman package because the system tell me that doesn't exist; i've also tried to installing from source, but i can't install some libraries which are required. I've installed a package called simply 'volman', but when i try to enable Removable Media management, it warns me saying it can't find thunar-volman process (child process failed). Someone could help me? Many Thanks!