gnome-shell crashed with signal 5 in g_log_default_handler()

[이야기]

Maybe I can not remember it. Two messages were forgotten ...
There was an error in wayland.
I am logged in as x11 and have a bug report.

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.26.2-0ubuntu3
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME-Greeter:GNOME
Date: Fri Feb 23 17:40:24 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

InstallationDate: Installed on 2018-02-22 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180221)
JournalErrors:
 -- Logs begin at Fri 2018-02-23 08:40:56 KST, end at Fri 2018-02-23 18:06:05 KST. --
  2월 23 18:02:40 hostname avahi-daemon[836]: chroot.c: open() failed: No such file or directory
  2월 23 18:02:40 hostname NetworkManager[821]: ((src/devices/nm-device.c:1452)): assertion '<dropped>' failed
  2월 23 18:02:41 hostname gnome-session-binary[1014]: Unrecoverable failure in required component org.gnome.Shell.desktop
  2월 23 18:02:56 hostname pulseaudio[1554]: [pulseaudio] backend-ofono.c: Failed to register as a handsfree audio agent with ofono: org.freedesktop.DBus.Error.ServiceUnknown: The name org.ofono was not provided by any .service files
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ko_KR.UTF-8
 SHELL=/bin/false
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_log_default_handler () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? ()
 g_logv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_log () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gnome-shell crashed with signal 5 in g_log_default_handler()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1748450, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.