light-locker crashed with signal 5 in g_type_create_instance()

[everton3x]

First login into LXDE installed by sudo apt install lxde. Login from GDM3

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: light-locker 1.8.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu2
Architecture: amd64
CurrentDesktop: LXDE
Date: Tue Apr 3 16:36:39 2018
ExecutablePath: /usr/bin/light-locker
InstallationDate: Installed on 2018-04-03 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180403)
ProcCmdline: light-locker
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
Signal: 5
SourcePackage: light-locker
StacktraceTop:
 ?? ()
 g_type_create_instance () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new_with_properties () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_new () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: light-locker crashed with signal 5 in g_type_create_instance()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip 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 #1745259, 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.