I have configured a fingerprint scanner on a Lenovo laptop. I used fprintd in order to get it working. I don't remember exactly what I did, but it is better to try this than nothing:
After you have installed fprintd, try to go in gnome-control-panel (I did it in Ubuntu 18.04, so if you are using a different distro it probably won't work). Scroll to the bottom and go to Details > Users > your user > between "automatic login" and "last login", I have an option that says "Login with fingerprint : Turned on". It might not have been so easy when I did it, but I don't remember what I did to configure it, so I don't have a good solution.
I would also try to reboot and try the enroll command again.