Comment 7 for bug 1573488

Hi,
I'm facing the same issue after following mitaka openstack installation guide on Ubuntu 14.04.4 LTS,

Please find the apache2 logs below,
[Fri May 13 11:31:04.573431 2016] [:info] [pid 1066:tid 139768017549184] mod_wsgi (pid=1066): Attach interpreter ''.
[Fri May 13 11:31:12.477906 2016] [authz_core:debug] [pid 1083:tid 139767832377088] mod_authz_core.c(802): [client 192.168.1.140:57969] AH01626: authorization result of Require all granted: granted
[Fri May 13 11:31:12.477967 2016] [authz_core:debug] [pid 1083:tid 139767832377088] mod_authz_core.c(802): [client 192.168.1.140:57969] AH01626: authorization result of <RequireAny>: granted
[Fri May 13 11:31:12.478073 2016] [authz_core:debug] [pid 1083:tid 139767832377088] mod_authz_core.c(802): [client 192.168.1.140:57969] AH01626: authorization result of Require all granted: granted
[Fri May 13 11:31:12.478083 2016] [authz_core:debug] [pid 1083:tid 139767832377088] mod_authz_core.c(802): [client 192.168.1.140:57969] AH01626: authorization result of <RequireAny>: granted
[Fri May 13 11:31:12.492575 2016] [:info] [pid 1067:tid 139767914018560] mod_wsgi (pid=1067): Create interpreter 'controller|/horizon'.
[Fri May 13 11:31:12.494695 2016] [:info] [pid 1067:tid 139767914018560] [remote 192.168.1.140:1863] mod_wsgi (pid=1067, process='horizon', application='controller|/horizon'): Loading WSGI script '/usr/share/openstack-dashboard/openstack_dashboard/wsgi/django.wsgi'.
[Fri May 13 06:06:14.575389 2016] [:info] [pid 1067:tid 139767930803968] mod_wsgi (pid=1067): Daemon process deadlock timer expired, stopping process 'horizon'.
[Fri May 13 06:06:14.575539 2016] [:info] [pid 1067:tid 139768017549184] mod_wsgi (pid=1067): Shutdown requested 'horizon'.
[Fri May 13 06:06:19.576133 2016] [:info] [pid 1067:tid 139767662200576] mod_wsgi (pid=1067): Aborting process 'horizon'.
[Fri May 13 11:36:19.584275 2016] [core:error] [pid 1083:tid 139767832377088] [client 192.168.1.140:57969] End of script output before headers: django.wsgi
[Fri May 13 11:36:19.813866 2016] [:info] [pid 1063:tid 139768017549184] mod_wsgi (pid=1067): Process 'horizon' has died, restarting.