1. systemctl start asterisk

Asterisk is linked against libncursesw.so.5

1. journalctl -u asterisk
   [...]
   Feb 22 22:13:46 E350M1 systemd¹: Started Asterisk PBX and telephony daemon.
   Feb 22 22:13:46 E350M1 asterisk³⁴²⁸: /usr/bin/asterisk: error while loading shared libraries: libncursesw.so.5: cannot open shared object file: No such file or directory
   Feb 22 22:13:46 E350M1 systemd¹: asterisk.service: Main process exited, code=exited, status=127/n/a

But parabola has libncursesw.so.6.0:

1. pacman -Q -o /usr/lib/libncursesw*
   /usr/lib/libncursesw.so is owned by ncurses 6.0-4
   /usr/lib/libncursesw.so.6 is owned by ncurses 6.0-4
   /usr/lib/libncursesw.so.6.0 is owned by ncurses 6.0-4