Fix #2788

app/views/admin/application/connections/_backlinks.html.erb

@@ -2,26 +2,30 @@ backlinks:
   current_website:
     name: "<%= @website.to_s_in(about.language) %>"
     pages:
-<% about.backlinks_pages(@website).each do |element| 
+<% about.backlinks_pages(@website).each do |element|
     hugo = element.hugo(@website)
+    next if hugo.nil?
     %>
 <%= render 'admin/application/static/hugo/single', hugo: hugo, depth: 3 %>
 <% end %>
     posts:
 <% about.backlinks_posts(@website).each do |element| 
     hugo = element.hugo(@website)
+    next if hugo.nil?
     %>
 <%= render 'admin/application/static/hugo/single', hugo: hugo, depth: 3 %>
 <% end %>
     events:
 <% about.backlinks_agenda_events(@website).each do |element| 
     hugo = element.hugo(@website)
+    next if hugo.nil?
     %>
 <%= render 'admin/application/static/hugo/single', hugo: hugo, depth: 3 %>
 <% end %>
     projects:
 <% about.backlinks_portfolio_projects(@website).each do |element| 
     hugo = element.hugo(@website)
+    next if hugo.nil?
     %>
 <%= render 'admin/application/static/hugo/single', hugo: hugo, depth: 3 %>
 <% end %>