NoMethodError in Pages#custom_page

Showing /home/ec2-user/internship_new/trunk/app/views/layouts/application.html.erb where line #145 raised:

undefined method `include?' for nil:NilClass

Extracted source (around line #145):

142
143
144
145
146
147
148
          
</script>
<% end %>
<% if get_site_id(request, params[:domain]).to_i == 130 && @url.include?("/")%>
<% if @url.include?("/article1") %>
<script type="application/ld+json"> {
"@context": "http://schema.org",

Trace of template inclusion: app/views/layouts/layout1.html.erb

Rails.root: /home/ec2-user/internship_new/trunk

Application Trace | Framework Trace | Full Trace
app/views/layouts/application.html.erb:145:in `_app_views_layouts_application_html_erb__682775452762713080_48783060'
app/views/layouts/layout1.html.erb:20:in `_app_views_layouts_layout__html_erb___2886214294086156188_48704120'
app/controllers/application_controller.rb:88:in `error_500'

Request

Parameters:

{"page_name1"=>"useful",
 "page_name2"=>"iroha",
 "page_name3"=>"knowledge"}

Response

Headers:

None