News and blog sections not working

[nemp]

When I go to the "News" page, I have:

ArgumentError in Newsitems#index

Showing app/views/layouts/shared/_archive.html.erb where line #11 raised:

invalid date

Extracted source (around line #11):

8:
9: <% dates.group_by { |m| m.created_at.strftime('%B')}.each do |month, items| %>
10:

11: <%= link_to "#{month} (#{items.size})", archive_link(@page, Date.parse(month).month, year) %>
12:

13: <% end -%>
14: