package ibus 1.5.11-1ubuntu2 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127

[smither416]

I can not update some packages . there is always errors

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: ibus 1.5.11-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Thu Sep 1 21:32:20 2016
DuplicateSignature:
 package:ibus:1.5.11-1ubuntu2
 Removing ibus (1.5.11-1ubuntu2) ...
 /var/lib/dpkg/info/ibus.prerm: 7: /var/lib/dpkg/info/ibus.prerm: dconf: not found
 dpkg: error processing package ibus (--remove):
  subprocess installed pre-removal script returned error exit status 127
ErrorMessage: subprocess installed pre-removal script returned error exit status 127
InstallationDate: Installed on 2016-07-16 (47 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: ibus
Title: package ibus 1.5.11-1ubuntu2 failed to install/upgrade: subprocess installed pre-removal script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.