package sphinxsearch 2.2.11-2ubuntu2 failed to install/upgrade: installed sphinxsearch package post-installation script subprocess returned error exit status 1

[Jordan Gue]

I did one upgrade of the ubuntu version as it was asked by the system.
Then, at the end, the system reported that the sphinx package was not installed due to some unknown failure

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: sphinxsearch 2.2.11-2ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
Uname: Linux 5.4.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5CheckResult: skip
Date: Mon Jun 22 20:44:55 2020
ErrorMessage: installed sphinxsearch package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2020-03-04 (110 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: sphinxsearch
Title: package sphinxsearch 2.2.11-2ubuntu2 failed to install/upgrade: installed sphinxsearch package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to focal on 2020-06-22 (0 days ago)
mtime.conffile..etc.default.sphinxsearch: 2020-03-05T08:33:55.873285