xfce4-notifyd crashed with SIGABRT in __sigqueue()

I was adjusting audio properties when the ubuntu error report popped up ready to send a report. I am not certain what caused it. I had only just finished updating the system with software updater before I used the audio and video properties app.

ProblemType: Crash
DistroRelease: Ubuntu 20.04
Package: xfce4-notifyd 0.4.4-1
ProcVersionSignature: Ubuntu 5.4.0-14.17-lowlatency 5.4.18
Uname: Linux 5.4.0-14-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
Date: Tue Mar 17 13:28:07 2020
ExecutablePath: /usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd
InstallationDate: Installed on 2020-02-20 (25 days ago)
InstallationMedia: Ubuntu-Studio 19.10 "Eoan Ermine" - Release amd64 (20191017)
ProcCmdline: /usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd
ProcEnviron:
 LANG=en_AU.UTF-8
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
Signal: 6
SourcePackage: xfce4-notifyd
StacktraceTop:
 __sigqueue (pid=234, sig=406215968, val=...) at ../sysdeps/unix/sysv/linux/sigqueue.c:37
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: xfce4-notifyd crashed with SIGABRT in __sigqueue()
UpgradeStatus: Upgraded to focal on 2020-03-13 (3 days ago)
UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo
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