Typo RuntimeError

RuntimeError in Admin/dashboard#index

Showing app/views/admin/dashboard/_posts.html.erb where line #9 raised:

Invalid root argument: 
Extracted source (around line #9):

6:     <% else %>
7:       <% for post in @recent_posts -%>
8:         <li>
9:           <%= link_to_permalink post, post.title %> (<%= link_to_permalink(post, post.published_comments.size) %>)
10:         </li>
11:       <% end %> 
12:     <% end %>
Trace of template inclusion: app/views/admin/dashboard/index.html.erb