package python3-pkg-resources 20.7.0-1 failed to install/upgrade: il sottoprocesso installato script di post-installation ha restituito lo stato di errore 1

[fudo.fudo]

I do not know what to write, most of the operations end in failure.
I am flooded with mistakes and I can not use the computer in a decent way !!

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python3-pkg-resources 20.7.0-1
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic i686
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: i386
Date: Wed Dec 21 13:16:02 2016
Dependencies:

ErrorMessage: il sottoprocesso installato script di post-installation ha restituito lo stato di errore 1
InstallationDate: Installed on 2016-05-16 (219 days ago)
InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.18
SourcePackage: python-setuptools
Title: package python3-pkg-resources 20.7.0-1 failed to install/upgrade: il sottoprocesso installato script di post-installation ha restituito lo stato di errore 1
UpgradeStatus: No upgrade log present (probably fresh install)