package python3 3.5.1-3 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127

I couldn't access ubuntu desktop.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python3 3.5.1-3
ProcVersionSignature: Ubuntu 4.13.0-41.46~16.04.1-generic 4.13.16
Uname: Linux 4.13.0-41-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.16
Architecture: amd64
Date: Wed May 9 11:52:20 2018
DuplicateSignature:
 package:python3:3.5.1-3
 Removing python3 (3.5.1-3) ...
 /var/lib/dpkg/info/python3.prerm: 5: /var/lib/dpkg/info/python3.prerm: py3clean: not found
 dpkg: error processing package python3 (--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 2018-02-27 (71 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.26
SourcePackage: python3-defaults
Title: package python3 3.5.1-3 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)