wrong number of arguments (0 for 1) - routing-filter-0.2.2 - Spree(Rails 2.3.5)

gistfile1.rb

ActionView::TemplateError (wrong number of arguments (0 for 1)) on line #35 of vendor/extensions/site/app/views/shared/_taxonomies.html.erb:
32:
33: <div class="search cell">
34:     <h3>Search Apps</h3>
35:     <% form_tag(products_path, :method => "get") do %>
36:     <%= text_field_tag 'keywords', h(params[:keywords]) %>
37:   <% end %>
38:     </ul>

    vendor/gems/routing-filter-0.2.2/lib/routing_filter/filter.rb:11:in `around_generate'
    vendor/gems/routing-filter-0.2.2/lib/routing_filter/filter.rb:11:in `send'
    vendor/gems/routing-filter-0.2.2/lib/routing_filter/filter.rb:11:in `run'
    vendor/gems/routing-filter-0.2.2/lib/routing_filter/chain.rb:15:in `run'
    (eval):3:in `products_path'