Started GET "/redmine/projects/wps/issues/new" for 192.168.0.126 at 2015-02-02 15:11:57 +0100
Processing by IssuesController#new as HTML
  Parameters: {"project_id"=>"wps"}
  Current user: admin (id=1)
  Rendered issues/_attributes.html.erb (865.4ms)
  Rendered issues/_form.html.erb (1188.6ms)
  Rendered issues/new.html.erb within layouts/base (1263.3ms)
Completed 500 Internal Server Error in 3473.5ms

ActionView::Template::Error (undefined method `name' for nil:NilClass):
    18: <p><%= f.select :assigned_to_id, principals_options_for_select(@issue.assignable_users, @issue.assigned_to), :include_blank => true, :required => @issue.required_attribute?('assigned_to_id') %></p>
    19: <% end %>
    20:
    21: <% if @issue.safe_attribute?('category_id') && @issue.project.issue_categories.any? %>
    22: <p><%= f.select :category_id, (@issue.project.issue_categories.collect {|c| [c.name, c.id]}), :include_blank => true, :required => @issue.required_attribute?('category_id') %>
    23: <%= link_to(image_tag('add.png', :style => 'vertical-align: middle;'),
    24:             new_project_issue_category_path(@issue.project),
  app/views/issues/_attributes.html.erb:21:in `block in _app_views_issues__attributes_html_erb__1060592268_27601740'
  app/helpers/application_helper.rb:1063:in `labelled_fields_for'
  app/views/issues/_attributes.html.erb:1:in `_app_views_issues__attributes_html_erb__1060592268_27601740'
  app/views/issues/_form.html.erb:41:in `block in _app_views_issues__form_html_erb__472316320_27949140'
  app/helpers/application_helper.rb:1063:in `labelled_fields_for'
  app/views/issues/_form.html.erb:1:in `_app_views_issues__form_html_erb__472316320_27949140'
  app/views/issues/new.html.erb:11:in `block in _app_views_issues_new_html_erb___542185599_28023204'
  app/helpers/application_helper.rb:1056:in `labelled_form_for'
  app/views/issues/new.html.erb:5:in `_app_views_issues_new_html_erb___542185599_28023204'
  app/controllers/issues_controller.rb:143:in `block (2 levels) in new'
  app/controllers/issues_controller.rb:142:in `new'