package postgresql-9.3 9.3.15-0ubuntu0.14.04 failed to install/upgrade: il sottoprocesso nuovo script pre-removal ha restituito lo stato di errore 1

[Michele]

The error comes up when trying to upgrade the system.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: postgresql-9.3 9.3.15-0ubuntu0.14.04
ProcVersionSignature: Ubuntu 3.13.0-112.159-generic 3.13.11-ckt39
Uname: Linux 3.13.0-112-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.23
Architecture: amd64
Date: Tue Mar 21 10:36:47 2017
DuplicateSignature: package:postgresql-9.3:9.3.15-0ubuntu0.14.04:il sottoprocesso nuovo script pre-removal ha restituito lo stato di errore 1
ErrorMessage: il sottoprocesso nuovo script pre-removal ha restituito lo stato di errore 1
InstallationDate: Installed on 2014-06-27 (998 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.17
SourcePackage: postgresql-9.3
Title: package postgresql-9.3 9.3.15-0ubuntu0.14.04 failed to install/upgrade: il sottoprocesso nuovo script pre-removal ha restituito lo stato di errore 1
UpgradeStatus: No upgrade log present (probably fresh install)