Comment 9 for bug 1573488

i have the same problem,and my error.log only have "End of script output before headers: django.wsgi"

my apache2 have no broblem,http://localhost is normal.

I tried solution suggested by #6 ,but it did not resolve the issue.

comandline service apache2 restart with follews:
root@controller:/etc/apache2/conf-enabled# service apache2 restart
 * Restarting web server apache2 [fail]
 * The apache2 configtest failed.
Output of config test was:
AH00526: Syntax error on line 4 of /etc/apache2/conf-enabled/openstack-dashboard.conf:
Invalid command 'WSGIApplicationGroup%{GLOBAL}', perhaps misspelled or defined by a module not included in the server configuration
Action 'configtest' failed.
The Apache error log may have more information.

error.log
[Sun May 15 07:49:37.296060 2016] [mpm_event:notice] [pid 10704:tid 139920269113216] AH00489: Apache/2.4.7 (Ubuntu) mod_wsgi/3.4 Python/2.7.6 configured -- resuming normal operations
[Sun May 15 07:49:37.296102 2016] [core:notice] [pid 10704:tid 139920269113216] AH00094: Command line: '/usr/sbin/apache2'
[Sun May 15 10:30:51.322057 2016] [mpm_event:notice] [pid 10704:tid 139920269113216] AH00491: caught SIGTERM, shutting down