package coturn 4.5.1.1-1.1ubuntu0.20.04.1 failed to install/upgrade: installed coturn package post-installation script subprocess returned error exit status 1

[Lars Olesen]

I have not manually edited the coturn configuration.
I am using software center to update the software on a Dell PC which came preinstalled with ubuntu 18.04 (I recently upgraded to 20.04)

1. lsb_release -rd:
Ubuntu 20.04 LTS

2. apt-cache policy coturn
coturn:
  Installeret: 4.5.1.1-1.1ubuntu0.20.04.1
  Kandidat: 4.5.1.1-1.1ubuntu0.20.04.1
  Versionstabel:
 *** 4.5.1.1-1.1ubuntu0.20.04.1 500
        500 http://dk.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages
        500 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages
        100 /var/lib/dpkg/status
     4.5.1.1-1.1build2 500
        500 http://dk.archive.ubuntu.com/ubuntu focal/universe amd64 Packages

3. I expected the normal upgrade to complete successfully
4. The upgrade failed for the coturn package.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: coturn 4.5.1.1-1.1ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Jul 24 08:14:35 2020
DistributionChannelDescriptor:
 # This is the distribution channel descriptor for the OEM CDs
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-bionic-amd64-20180608-47+brookhollow+X77
ErrorMessage: installed coturn package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2020-05-09 (75 days ago)
InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20180608-09:38
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: coturn
Title: package coturn 4.5.1.1-1.1ubuntu0.20.04.1 failed to install/upgrade: installed coturn package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to focal on 2020-06-01 (52 days ago)
mtime.conffile..etc.default.coturn: 2020-06-01T15:57:08.062900