package gnome-orca 3.18.2-1ubuntu3 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127

[Tanmay Surlekar]

Trying to uninstall ubuntu-desktop and reinstall it

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: gnome-orca 3.18.2-1ubuntu3
ProcVersionSignature: Ubuntu 4.13.0-36.40~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
Date: Fri Mar 2 16:45:39 2018
DuplicateSignature:
 package:gnome-orca:3.18.2-1ubuntu3
 Removing language-selector-gnome (0.165.4) ...
 /var/lib/dpkg/info/language-selector-gnome.prerm: 6: /var/lib/dpkg/info/language-selector-gnome.prerm: py3clean: not found
 dpkg: error processing package language-selector-gnome (--purge):
  subprocess installed pre-removal script returned error exit status 127
ErrorMessage: subprocess installed pre-removal script returned error exit status 127
InstallationDate: Installed on 2018-01-18 (43 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.3
 apt 1.2.25
SourcePackage: gnome-orca
Title: package gnome-orca 3.18.2-1ubuntu3 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)