gnome-shell crashed with SIGABRT

[Rocko]

This happened shortly after I removed a kernel with ukuu-gtk, just after I pressed the 'Close' button on the ukuu-gtk dialog window.

ProblemType: Crash
DistroRelease: Ubuntu 18.10
Package: gnome-shell 3.30.0-3ubuntu1
Uname: Linux 4.19.0-041900rc7-generic x86_64
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 8 09:21:50 2018
DisplayManager: gdm3
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/gnome-shell
ExecutableTimestamp: 1538397942
InstallationDate: Installed on 2017-08-16 (417 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcCmdline: /usr/bin/gnome-shell
ProcCwd: /home/rocko
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: gnome-shell
StacktraceTop:
 () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_assertion_message_expr () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
 meta_window_unmanage () at /usr/lib/x86_64-linux-gnu/libmutter-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libmutter-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libmutter-3.so.0
Title: gnome-shell crashed with SIGABRT
UpgradeStatus: Upgraded to cosmic on 2018-08-15 (53 days ago)
UserGroups: adm bumblebee cdrom dip kvm lpadmin plugdev sambashare sudo

[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 #1791574, 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.