5.1 notification settings page 500

Created by: dccmx

After upgraded from 5.0 to 5.1 followed instructions from https://github.com/gitlabhq/gitlabhq/blob/master/doc/update/5.0-to-5.1.md, I got 500 every time I open the notification settings page.

Processing by NotificationsController#show as HTML Rendered notifications/show.html.haml within layouts/profile (388.7ms) Completed 500 Internal Server Error in 395ms

ActionView::Template::Error (undefined method name' for nil:NilClass): 45: .row 46: .span4 47: %span 48: = link_to_project(users_project.project) 49: .span7 50: = form_tag profile_notifications_path, method: :put, remote: true, class: 'update-notifications' do 51: = hidden_field_tag :notification_type, 'project', id: dom_id(users_project, 'notification_type') app/helpers/projects_helper.rb:12:inblock in link_to_project' app/helpers/projects_helper.rb:11:in link_to_project' app/views/notifications/show.html.haml:48:inblock in _app_views_notifications_show_html_haml___3938765082471905255_33907440' app/views/notifications/show.html.haml:42:in `_app_views_notifications_show_html_haml___3938765082471905255_33907440'