package python-libxml2 2.9.1+dfsg1-3ubuntu4.6 failed to install/upgrade: le sous-processus nouveau script pre-removal a retourné une erreur de sortie d'état 126

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ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: python-libxml2 2.9.1+dfsg1-3ubuntu4.6
ProcVersionSignature: Ubuntu 3.19.0-49.55~14.04.1-generic 3.19.8-ckt12
Uname: Linux 3.19.0-49-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Sat Feb 6 07:45:11 2016
ErrorMessage: le sous-processus nouveau script pre-removal a retourné une erreur de sortie d'état 126
InstallationDate: Installed on 2015-12-11 (56 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: libxml2
Title: package python-libxml2 2.9.1+dfsg1-3ubuntu4.6 failed to install/upgrade: le sous-processus nouveau script pre-removal a retourné une erreur de sortie d'état 126
UpgradeStatus: No upgrade log present (probably fresh install)