ActionController :: RoutingError (No routes match [GET] "/ system / images / assets / small / IMG _-_ WIN_20141206_09

I am trying to load an image into my rails app but it gives me

error: - (No route matches [GET] "/ System / Photos / Assets / Small / Image _-_ WIN_20141206_09.

I don't know where I went wrong. I am trying to specify url, path and I also downloaded the rails logo and moved toapp/assets/images

$ curl -O

http://rubyonrails.org/image/rails.png

$ mv rails.png app/assets/images/

      

        
        
        
      

    

My git repository is at: https://github.com/sarahgupta022/book.git

This is my picture.rb

class Picture < ActiveRecord::Base

 belongs_to :album

 belongs_to :user

 attr_accessible :caption, :description, :asset

  has_attached_file :asset, style: { 
                  large: "800x800>", medium: "300x200>", small: "260x180>",     thumb: "80x80#"
                  } , :default_url => "/app/assets/images/small/rails.png"


 validates_attachment_file_name :asset, :matches => [/png\Z/, /jpe?g\Z/, /gif\Z/]
 validates :asset, attachment_presence: true

def to_s

 caption? ? caption : "Picture"
   end  
 end

      

        
        
        
      

    

This is my views/pictures/index.html.erb

<% @pictures.each do |picture| %>
   <li>
<div class="thumbnail">
    <%= link_to image_tag(picture.asset.url(:small)),  album_picture_path(@user, @album, picture) %><br /><br />
    <div class="caption">
        <% if picture.caption? %><%= picture.caption %><br /><br /><% end %>

        <%= link_to 'View full size', album_picture_path(@user, @album, picture) %>

        <% if can_edit_picture?(picture) %>
        <%= link_to "Edit", edit_album_picture_path(@album, picture) %>
        <%= link_to "Delete", album_picture_path(@album, picture), method: :delete, data: { confirm: "Are you sure?" } %>
        <% end %>
        </div>
        </div>
    </li>

      

        
        
        
      

    

Thanks a lot for any help. Thank!