package linux-modules-5.15.0-84-generic (not installed) failed to install/upgrade: error creating directory './lib/modules/5.15.0-84-generic': Operation not permitted

[Steven Bruce]

I am totally new to Linux and this site. My HP Pavilion Entertainment PC will not play many videos, including the one that generated this error message and Youtube. The system was installed from a CD-ROM in Canada: Ubuntu 20.04 'Focal Fossa'

Thanks for you help!

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: linux-modules-5.15.0-84-generic (not installed)
ProcVersionSignature: Ubuntu 5.13.0-44.49~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-44-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
Date: Mon Sep 25 17:31:53 2023
DpkgTerminalLog:
 Preparing to unpack .../00-linux-modules-5.15.0-84-generic_5.15.0-84.93~20.04.1_amd64.deb ...
 Unpacking linux-modules-5.15.0-84-generic (5.15.0-84.93~20.04.1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-h3VmTL/00-linux-modules-5.15.0-84-generic_5.15.0-84.93~20.04.1_amd64.deb (--unpack):
  error creating directory './lib/modules/5.15.0-84-generic': Operation not permitted
DuplicateSignature:
 package:linux-modules-5.15.0-84-generic:(not installed)
 Unpacking linux-modules-5.15.0-84-generic (5.15.0-84.93~20.04.1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-h3VmTL/00-linux-modules-5.15.0-84-generic_5.15.0-84.93~20.04.1_amd64.deb (--unpack):
  error creating directory './lib/modules/5.15.0-84-generic': Operation not permitted
ErrorMessage: error creating directory './lib/modules/5.15.0-84-generic': Operation not permitted
InstallationDate: Installed on 2022-01-30 (603 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3.2
 apt 2.0.8
SourcePackage: linux-hwe-5.15
Title: package linux-modules-5.15.0-84-generic (not installed) failed to install/upgrade: error creating directory './lib/modules/5.15.0-84-generic': Operation not permitted
UpgradeStatus: No upgrade log present (probably fresh install)