night light issue

open a terminal then enter these in it :

gsettings set org.gnome.settings-daemon.plugins.color night-light-enabled true
gsettings set org.gnome.settings-daemon.plugins.color night-light-schedule-from 0
gsettings set org.gnome.settings-daemon.plugins.color night-light-schedule-to 24
gsettings set org.gnome.settings-daemon.plugins.color night-light-temperature 4500