NoMethodError: undefined method authorize_read_project!

Hello,

I'm having a 500 error when I try to go to http://gitlab.XXX.com/ci. I've watch the log and I saw this:

Started GET "/ci/" for 82.225.255.6 at 2016-03-28 18:15:58 +0200 Processing by Ci::ProjectsController#index as HTML Completed 500 Internal Server Error in 50ms (ActiveRecord: 5.4ms)

NoMethodError (undefined method authorize_read_project!' for #<Ci::ProjectsController:0x00000006b13dd8>): lib/gitlab/middleware/go.rb:16:in call'

Both Gitlab-ce and ci are installed on the same server. I'm running gitlab 8.6.1-ce.0.

Do you have any idea to solve my problem ?