Ubuntu in Oracle VM got upgraded and ran into error: A problem has occurred and system can't recover, please contact system administrator.
I have attached the photo of it.
I tried all the steps in the answer of previously asked question After Upgrade to Ubuntu 20.04: "Oh no! Something went wrong".
sudo apt update && sudo apt-get upgrade
sudo dpkg --configure -a
sudo apt remove gnome-session gnome gnome-shell
sudo apt autoremove
sudo reboot
but could not solve it. After sudo reboot in the end it still says the same.
