RedmineもRubyも触り始めたばかりで対策がわからずに困っています。
アドバイスお願いします。

[問題]
Redmineにcontacts(CRM)プラグインを導入してメニューのコンタクトのページに行くと
500エラーが発生する。

[環境]
Win7 x64
Bitnami Redmine 3.3.3-0
Redmine CRM plugin (Light version)

[実施したこと]
プラグインをフォルダにコピー後に下記コマンドを実行

bundle install --without development test RAILS_ENV=production
bundle exec rake redmine:plugins NAME=redmine_contacts RAILS_ENV=production
rake db:migrate RAILS_ENV="production"

サーバー再起動

[エラーログ]

Started GET "/redmine/contacts" for 127.0.0.1 at 2017-05-17 06:40:35 +0900
Processing by ContactsController#index as HTML
Current user: admin (id=1)
Rendered plugins/redmine_contacts/app/views/contacts/_upgrade_to_pro.html.erb (0.0ms)
Rendered plugins/redmine_contacts/app/views/common/_sidebar.html.erb (0.0ms)
Rendered plugins/redmine_contacts/app/views/contacts/_tags_cloud.html.erb (0.0ms)
Rendered plugins/redmine_contacts/app/views/notes/_last_notes.html.erb (10.0ms)
Rendered plugins/redmine_contacts/app/views/common/_contact_data.html.erb (0.0ms)
Rendered plugins/redmine_contacts/app/views/common/_recently_viewed.html.erb (1.0ms)
Rendered plugins/redmine_contacts/app/views/contacts/index.html.erb within layouts/base (27.0ms)
Completed 500 Internal Server Error in 121ms (ActiveRecord: 54.5ms)
ActionView::Template::Error (wrong number of arguments (0 for 1)):
86: <% end %>
87:
88: <% if Redmine::VERSION.to_s >= '3.3.3' %>
89: <%= context_menu %>
90: <% else %>
91: <%= context_menu url_for( {:controller => "contacts", :action => "context_menu"} ) %>
92: <% end %>
app/helpers/application_helper.rb:1157:in 'context_menu' plugins/redmine_contacts/app/views/contacts/index.html.erb:89:in'_plugins_redmine_contacts_app_views_contacts_index_html_erb___275016466_86436972'
lib/redmine/sudo_mode.rb:63:in `sudo_mode'