Ubuntu grub-efi-amd64-signed error after do-release-upgrade
Following error occurred whenever run apt upgrade after perform do-release-upgrade
dpkg: error processing package grub-efi-amd64-signed (–configure):
installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32
Solution
Reinstall all grub group packages using following commands
sudo apt-get purge grub\*
sudo apt-get install grub-efi
sudo apt-get autoremove
sudo update-grub