Graphical interface not logging in

I have installed the Simple Login Manager, slimas my login manager for xorg. I am using the Lumina desktop and FreeBSD 12.0. > SLiM is a lightweight login manager for X11, allowing the > initialization of a graphical session by entring username and password in a login > screen. I installed it with: pkg install slim Also placed into /etc/rc.conf slim_enable="YES" The graphical login interfaces does appear, however after inputing login and password, it gives the error Failed to execute login command. What to do?