Stable canary build failed tonight
@angus I guess you made a change here, I think you need to use register_category_list_preloaded_category_custom_fields instead and guard it with a defined?, see here
/var/www/discourse/plugins/discourse-journal/plugin.rb:51:inblock (2 levels) in activate!': undefined method preloaded_category_custom_fields' for CategoryList:Class (NoMethodError)