AttributeError: Ob instance has no attribute 'days_by_name'

 - Expression: "request.conf.days_by_name"
 - Filename:   /Users/mckemowse/Documents/koansys/github/croi_buildout/build/src/croi/croi/templates/main.pt
 - Location:   (165:34)

 - Source:     ... lock tal:repeat="day request.conf.days_by_name">
                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
 - Arguments:  repeat: {...} (0)
               renderer_name: templates/login.pt
               renderer_info: <RendererHelper - at 0x104aa8210>
               user: <UserAPI - at 0x104c45e10>
               date: <date - at 0x104c97190>
               message:
               password:
               came_from: /
               title: Please log in
               section: common
               request: <RequestWithConference - at 0x104a66f90>
               url: <URLAPI - at 0x104c45cd0>
               context: <RootFactory None at 0x104a821d0>
               action: /login
               logged_in: <NoneType - at 0x10014b4c0>
               login:
               view: <function login at 0x1025e1b18>