我正在尝试安装 Redmine ICalendar 导出插件（https://github.com/planio/redmine_icalendar_export），这个插件需要 icalendar，我尝试使用"gem install icalendar". 但安装后压延机部分停止工作并显示错误"Internal error An error occurred on the page you were trying to access."
在日志文件中，我收到以下错误：
ActionView::TemplateError (No route matches {:action=>"index", :status=>"all", :controller=>"calendar", :assigned_to=>"*", :format=>"atom", :project_id=>#<Project id: 3, name: "test project", description: "", homepage: "", is_public: true, parent_id: nil, created_on: "2013-01-08 06:03:05", updated_on: "2013-02-16 04:02:42", identifier: "testproject", status: 1, lft: 5, rgt: 6>, :key=>"268944ce53edddhsjhhgyuh57678dff5f3a0db719323c"}) on line #5 of vendor/plugins/redmine_icalendar_export-master/app/views/hooks/redmine_icalendar_export/_view_calendars_show_bottom.html.erb:
2: <% other_formats_links do |f| %>
3: <%= f.link_to 'ICS', :url => { :status => 'all', :assigned_to => '*', :controller => 'calendar', :action => 'index', :project_id => @project, :key => User.current.rss_key, :format => 'atom' } %>
6: <% end %>
7: <% end %>