Same error for grub-pc. Downgrading to 2.02~beta2-36ubuntu3.9 fixes the issue at the expense of losing /etc/default/grub. It will be replaced by the package file.
Same error for grub-pc. Downgrading to 2.02~beta2- 36ubuntu3. 9 fixes the issue at the expense of losing /etc/default/grub. It will be replaced by the package file.