ruby - Rails - *_path returning absolute path instead of relative path -

i'm working through chapter 5 of https://www.railstutorial.org. when running rails server footer link rendering: "href=localhost:3000/about" instead of "/about".

here relevant code view:

<%= link_to "about", about_path %> <%= link_to "contact", contact_path %> 

here routes.rb:

root           'static_pages#home' 'help'  => 'static_pages#help' 'about' => 'static_pages#about' 'contact' => 'static_pages#contact' 

i included contact link because returning desired "/contact". driving me little crazy.

i'll include test file well:

test "layout links"   root_path   assert_template 'static_pages/home'   assert_select "a[href=?]", root_path, count: 2   assert_select "a[href=?]", help_path   assert_select "a[href=?]", about_path   assert_select "a[href=?]", contact_path end 

the resulting error is:

sitelayouttest#test_layout_links [/sample_app/test/integration/site_layout_test.rb:9]: expected @ least 1 element matching "a[href="/about"]", found 0..