[Bug 1582036] Re: package openstack-dashboard 2:9.0.0-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[ltore123]

127.0.0.1:43224] Truncated or oversized response headers received from
daemon process 'horizon': /usr/share/openstack-
dashboard/openstack_dashboard/wsgi/django.wsgi

ı get this error in apache log

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https://bugs.launchpad.net/bugs/1582036

Title:
  package openstack-dashboard 2:9.0.0-0ubuntu2 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in horizon package in Ubuntu:
  Incomplete

Bug description:
  can anybody fix it

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: openstack-dashboard 2:9.0.0-0ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  AptOrdering:
   openstack-dashboard: Install
   openstack-dashboard: Configure
   openstack-dashboard-ubuntu-theme: Configure
   NULL: ConfigurePending
  Architecture: amd64
  Date: Mon May 16 01:34:51 2016
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2016-05-10 (5 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  PackageArchitecture: all
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.1
   apt  1.2.10ubuntu1
  SourcePackage: horizon
  Title: package openstack-dashboard 2:9.0.0-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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