package libelf1:amd64 0.170-0.5.0ubuntu1 failed to install/upgrade: triggers ci file contains unknown directive '<?xml'

[Fila Kolodny]

Install failed

ProblemType: Package
DistroRelease: Ubuntu 18.10
Package: libelf1:amd64 0.170-0.5.0ubuntu1
ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
Date: Tue Jan 29 13:33:50 2019
ErrorMessage: triggers ci file contains unknown directive '<?xml'
InstallationDate: Installed on 2019-01-28 (3 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.10
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu5
 apt 1.7.2
SourcePackage: elfutils
Title: package libelf1:amd64 0.170-0.5.0ubuntu1 failed to install/upgrade: triggers ci file contains unknown directive '<?xml'
UpgradeStatus: No upgrade log present (probably fresh install)