package python3 3.8.2-0ubuntu2 failed to install/upgrade: installed python3 package post-installation script subprocess returned error exit status 4

[Dhaval Vira]

Hello

while upgrading from 18.04 LTS to 20.04 LTS I found this Error, please resolve it

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: python3 3.8.2-0ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Oct 2 10:43:58 2020
ErrorMessage: installed python3 package post-installation script subprocess returned error exit status 4
InstallationDate: Installed on 2020-04-04 (180 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: python3-defaults
Title: package python3 3.8.2-0ubuntu2 failed to install/upgrade: installed python3 package post-installation script subprocess returned error exit status 4
UpgradeStatus: Upgraded to focal on 2020-10-02 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.