package phpmyadmin 4:4.5.4.1-2ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

[Celestino Estrada]

After upgrade to 16.04 I'am getting this error:

The mbstring extension is missing. Please check your PHP configuration.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: phpmyadmin 4:4.5.4.1-2ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic i686
ApportVersion: 2.20.1-0ubuntu2
Architecture: i386
Date: Thu May 12 10:45:41 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 10
InstallationDate: Installed on 2015-06-12 (334 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: phpmyadmin
Title: package phpmyadmin 4:4.5.4.1-2ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10
UpgradeStatus: Upgraded to xenial on 2016-05-12 (0 days ago)

[Launchpad Janitor (janitor)]

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

[Michal Čihař (nijel)]

Should be fixed in 4:4.6.0-1