Upon bootup, my Ubuntu 16.04 system booted to busybox (
initramfs). I ran fsck on the boot drive, found and resolved errors. The system now boots fine, but I am unable to do anything as sudo. I get the following error:
sudo: error in /etc/sudo.conf, line 0 while loading plugin `sudoers_policy' sudo: unable to load /usr/lib/sudo/sudoers.so: /usr/lib/sudo/sudoers.so: file too short sudo: fatal error, unable to load plugins
/usr/lib/sudo/sudoers.so now contains no content. The file ownership and permission appear to be fine. Is there a way to rebuild the file?