backport-iwlwifi-dkms 8324-0ubuntu3~20.04.3: backport-iwlwifi kernel module failed to build

[Iqbal Nanabhay]

system error came up which i am reporting

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: backport-iwlwifi-dkms 8324-0ubuntu3~20.04.4
ProcVersionSignature: Ubuntu 5.8.0-63.71~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-63-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
DKMSKernelVersion: 5.11.0-25-generic
Date: Fri Aug 6 13:49:31 2021
DuplicateSignature: dkms:backport-iwlwifi-dkms:8324-0ubuntu3~20.04.3:/var/lib/dkms/backport-iwlwifi/8324/build/net/wireless/util.c:851:2: error: implicit declaration of function ‘kzfree’; did you mean ‘kfree’? [-Werror=implicit-function-declaration]
InstallationDate: Installed on 2021-03-27 (131 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
PackageArchitecture: all
PackageVersion: 8324-0ubuntu3~20.04.3
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.6
SourcePackage: backport-iwlwifi-dkms
Title: backport-iwlwifi-dkms 8324-0ubuntu3~20.04.3: backport-iwlwifi kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)