I am unable to upgrade the system, its showing some error "Both /bin/uname and /usr/bin/uname exist"

[PK Aditya]

There is an error being faced by me in my ubuntu 22.04 while trying to upgrade something or install something, i have provided the error details below. It would be very helpful if someone could help me to resolve this error, its kind of urgent to resolve the error. Thank you.

$ sudo apt-get upgrade mutter

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
mutter is already the newest version (42.9-0ubuntu7).
mutter set to manually installed.
Calculating upgrade... Done
The following packages have been kept back:
  gdb gdb-multiarch gir1.2-mutter-10 libmutter-10-0 libpeas-1.0-0
  libpulse-mainloop-glib0 libpulse0 libpulse0:i386 libpulsedsp pulseaudio
  pulseaudio-module-bluetooth pulseaudio-utils snapd update-notifier-common
0 upgraded, 0 newly installed, 0 to remove and 14 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up usrmerge (25ubuntu2) ...
Smartmatch is experimental at /usr/lib/usrmerge/convert-usrmerge line 172.

FATAL ERROR:
Both /bin/uname and /usr/bin/uname exist.

You can try correcting the errors reported and running again
/usr/lib/usrmerge/convert-usrmerge until it will complete without errors.
Do not install or update other Debian packages until the program
has been run successfully.

dpkg: error processing package usrmerge (--configure):
 installed usrmerge package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 usrmerge
E: Sub-process /usr/bin/dpkg returned an error code (1)

$ /usr/lib/usrmerge/convert-usrmerge
Smartmatch is experimental at /usr/lib/usrmerge/convert-usrmerge line 172.
ionice: ioprio_set failed: Operation not permitted
chrt: failed to set pid 9184's policy: Operation not permitted

FATAL ERROR:
Both /bin/uname and /usr/bin/uname exist.

You can try correcting the errors reported and running again
/usr/lib/usrmerge/convert-usrmerge until it will complete without errors.
Do not install or update other Debian packages until the program
has been run successfully.

$

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-release-upgrader-core 1:22.04.19
ProcVersionSignature: Ubuntu 5.15.0-101.111-generic 5.15.143
Uname: Linux 5.15.0-101-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 28 10:08:04 2024
InstallationDate: Installed on 2021-09-23 (916 days ago)
InstallationMedia: Ubuntu 18.04.6 LTS "Bionic Beaver" - Release amd64 (20210915)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to jammy on 2024-03-27 (0 days ago)
VarLogDistupgradeXorgFixuplog:
 INFO:root:/usr/bin/do-release-upgrade running
 INFO:root:No xorg.conf, exiting
modified.conffile..etc.update-manager.release-upgrades: [modified]
mtime.conffile..etc.update-manager.release-upgrades: 2024-03-26T14:57:52.438338