Tried to disable the Guest Session by editing the /etc/lightdm/lightdm.conf with following value.
The lightdm.conf was empty before edit, somehow by writing that caused the screen blank after logged out and wasn’t able to login.
So I reboot into recovery mode, and rewrite the lightdm.conf as following:
mount -o rw,remount /
Insert into lightdm.conf the following:
Reboot and the problem solved 🙂