package phpmyadmin (not installed) failed to install/upgrade: installed phpmyadmin package post-installation script subprocess returned error exit status 1

[Philippe reynaud]

the bug is due to a php5.6 version incompatible with the php7.4 used in the latest phpmyadmin.
Have to keep php5.6. It would therefore be a good thing that php dependant installations check php version, alerts on it but also proposes previous version of whatever has to be installed (here phpmyadmin - i installed the previous version which solves my problem).

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: phpmyadmin (not installed)
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.10
AptOrdering:
 phpmyadmin:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sat Oct 31 18:10:13 2020
ErrorMessage: installed phpmyadmin package post-installation script subprocess returned error exit status 1
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: phpmyadmin
Title: package phpmyadmin (not installed) failed to install/upgrade: installed phpmyadmin package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)