package postgresql-9.4 (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1

[Joao Gustavo Cabral de Marins]

I tried to uninstall and something went wrong.

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: postgresql-9.4 (not installed)
ProcVersionSignature: Ubuntu 4.2.0-38.45-generic 4.2.8-ckt10
Uname: Linux 4.2.0-38-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
AptOrdering:
 postgresql-contrib-9.4: Purge
 postgresql-9.4: Purge
 NULL: ConfigurePending
Architecture: amd64
Date: Sun Jun 19 12:44:29 2016
DuplicateSignature: package:postgresql-9.4:(not installed):subprocess installed post-removal script returned error exit status 1
ErrorMessage: subprocess installed post-removal script returned error exit status 1
InstallationDate: Installed on 2015-08-13 (311 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu3
SourcePackage: postgresql-9.4
Title: package postgresql-9.4 (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 1
UpgradeStatus: Upgraded to wily on 2015-11-17 (214 days ago)