package python3-secretstorage 2.3.1-2 failed to install/upgrade: installed python3-secretstorage package post-installation script subprocess returned error exit status 1

ubuntu and lubuntu are constantly crashing and display greeting log-in screen without a chance to log in back. A week after the installation, operating system is not detected and boot in stops with intiframs.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: python3-secretstorage 2.3.1-2
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Sun May 27 23:38:06 2018
ErrorMessage: installed python3-secretstorage package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2018-05-28 (0 days ago)
InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /root/Error: command ['which', 'python'] failed with exit code 1:, Error: [Errno 2] No such file or directory: "/root/Error: command ['which', 'python'] failed with exit code 1:": "/root/Error: command ['which', 'python'] failed with exit code 1:", unpackaged
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: python-secretstorage
Title: package python3-secretstorage 2.3.1-2 failed to install/upgrade: installed python3-secretstorage package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)