It appears that you have libfprint with a bug that's been fixed some time ago. It looks like an unstable version could've appeared in repos due to misunderstanding of some sort (see https://gitlab.freedesktop.org/libfprint/libfprint/issues/143 for more info). You can try a newer git master, downgrade or wait till your pakage source (ppa? because ubuntu repos still have an older version) gets an update.
@Angel
> (process:3360): libfprint- poll-CRITICAL **: 20:49:10.548: fpi_timeout_add: assertion 'fpi_poll_ is_setup( )' failed
It appears that you have libfprint with a bug that's been fixed some time ago. It looks like an unstable version could've appeared in repos due to misunderstanding of some sort (see https:/ /gitlab. freedesktop. org/libfprint/ libfprint/ issues/ 143 for more info). You can try a newer git master, downgrade or wait till your pakage source (ppa? because ubuntu repos still have an older version) gets an update.