Sudo crashed after I launched nautilus via gksudo to do something then reboot

[林博仁(Buo-ren Lin)]

Thats all I know, I simply editing fontconfig settings in /etc/fonts.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: sudo 1.8.16-0ubuntu1.2
ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24
Uname: Linux 4.4.0-47-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Nov 19 15:05:11 2016
ExecutablePath: /usr/bin/sudo
ProcCmdline: /usr/bin/sudo -H -S -p GNOME_SUDO_PASS -u root -- nautilus
SourcePackage: sudo
UpgradeStatus: No upgrade log present (probably fresh install)
VisudoCheck:
 /etc/sudoers: parsed OK
 /etc/sudoers.d/README: parsed OK
mtime.conffile..etc.sudoers: 2016-11-05T00:11:24.257639