I can't reproduce your issue with the current master of Horizon. I have a local Horizon installation and when I attempt:
curl -H 'Accept-Language: es' http://localhost:8000/auth/login/ I get a Spanish version of the login page, but when I use a language code that is not translated I just get untranslated English back: curl -H 'Accept-Language: da' http://localhost:8000/auth/login/ Note that Italian and Portugese are both supported languages in Horizon. ** Changed in: horizon Status: New => Invalid ** Changed in: horizon Importance: Undecided => Medium -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Dashboard (Horizon). https://bugs.launchpad.net/bugs/1632146 Title: I18N: Horizon returns HTTP 500 when using some specific Accept- Language header values Status in OpenStack Dashboard (Horizon): Invalid Bug description: Trying to access Horizon using an Accept-Language header equals to "pt" (portuguese) or "it" (italian) returns an HTTP 500 making it impossible to access the dashboard. I didn't check other languages but I assume that it is not an italian or portuguese exclusive problem. Changing browser configuration to use "en", "es", "fr" or "ge" works well and I'm able to access the dashboard again. But using italian or portuguese as primary choice for language, even having "good" languages in the Accept-Language, also makes Horizon returns HTTP 500. Turning on debug mode on /etc/openstack-dashboard/local_settings.py and accessing the dashboard again returns the traceback attached to this report. Setting USE_I18N to False on local_settings.py fixes this behavior but certainly this is not the better approach to solve it since this project cares about internationalization. I've successfully reproduced this bug on Newton and master deploying it with kolla. To manage notifications about this bug go to: https://bugs.launchpad.net/horizon/+bug/1632146/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp