Gnome-shell got stuck and produces a plethora of error log messages to syslog file

This is the message in syslog file:

мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:43 hpz gnome-shell[2689]: == Stack trace for context 0x5563584e4900 ==
мар 11 09:34:44 hpz gnome-shell[2689]: Attempting to run a JS callback during garbage collection. This is most likely caused by destroying a Clutter actor or GTK widget with ::destroy signal connected, or using the destroy(), dispose(), or remove() vfuncs. Because it would crash the application, it has been blocked.
мар 11 09:34:44 hpz systemd-journald[377]: Suppressed 496051 messages from user@1000.service
мар 11 09:34:44 hpz gnome-shell[2689]: The offending callback was SourceFunc().
мар 11 09:34:44 hpz gnome-shell[2689]: Attempting to run a JS callback during garbage collection. This is most likely caused by destroying a Clutter actor or GTK widget with ::destroy signal connected, or using the destroy(), dispose(), or remove() vfuncs. Because it would crash the application, it has been blocked.
мар 11 09:34:44 hpz gnome-shell[2689]: The offending callback was SourceFunc().
мар 11 09:34:44 hpz gnome-shell[2689]: Attempting to run a JS callback during garbage collection. This is most likely caused by destroying a Clutter actor or GTK widget with ::destroy signal connected, or using the destroy(), dispose(), or remove() vfuncs. Because it would crash the application, it has been blocked.
мар 11 09:34:44 hpz gnome-shell[2689]: The offending callback was SourceFunc().
мар 11 09:34:44 hpz gnome-shell[2689]: Attempting to run a JS callback during garbage collection. This is most likely caused by destroying a Clutter actor or GTK widget with ::destroy signal connected, or using the destroy(), dispose(), or remove() vfuncs. Because it would crash the application, it has been blocked.
мар 11 09:34:44 hpz gnome-shell[2689]: The offending callback was SourceFunc().
мар 11 09:34:44 hpz gnome-shell[2689]: Attempting to run a JS callback during garbage collection. This is most likely caused by destroying a Clutter actor or GTK widget with ::destroy signal connected, or using the destroy(), dispose(), or remove() vfuncs. Because it would crash the application, it has been blocked.
мар 11 09:34:44 hpz gnome-shell[2689]: The offending callback was SourceFunc().
мар 11 09:34:44 hpz gnome-shell[2689]: Attempting to run a JS callback during garbage collection. This is most likely caused by destroying a Clutter actor or GTK widget with ::destroy signal connected, or using the destroy(), dispose(), or remove() vfuncs. Because it would crash the application, it has been blocked.
мар 11 09:34:44 hpz gnome-shell[2689]: The offending callback was SourceFunc().

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.4-1ubuntu1~20.04.2
ProcVersionSignature: Ubuntu 5.8.0-44.50~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-44-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 11 23:17:11 2021
DisplayManager: gdm3
InstallationDate: Installed on 2020-10-17 (145 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
RelatedPackageVersions: mutter-common 3.36.7+git20201123-0.20.04.1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)