package openvswitch-pki 2.13.3-0ubuntu0.20.04.2 failed to install/upgrade: installed openvswitch-pki package post-installation script subprocess returned error exit status 1

[javadkalamati]

when install mininet , ovs-testcontroller failed

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: openvswitch-pki 2.13.3-0ubuntu0.20.04.2
ProcVersionSignature: Ubuntu 5.11.0-36.40~20.04.1-generic 5.11.22
Uname: Linux 5.11.0-36-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.20
AptOrdering:
 openvswitch-pki:amd64: Install
 openvswitch-testcontroller:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Oct 1 16:48:33 2021
DuplicateSignature:
 package:openvswitch-pki:2.13.3-0ubuntu0.20.04.2
 Setting up openvswitch-pki (2.13.3-0ubuntu0.20.04.2) ...
 Creating controllerca...
 dpkg: error processing package openvswitch-pki (--configure):
  installed openvswitch-pki package post-installation script subprocess returned error exit status 1
ErrorMessage: installed openvswitch-pki package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2021-09-12 (19 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
PackageArchitecture: all
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: openvswitch
Title: package openvswitch-pki 2.13.3-0ubuntu0.20.04.2 failed to install/upgrade: installed openvswitch-pki package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)