Ruby on rails Rspec问题，应包含内容

我正在学习Hartl的Rails教程（第5节，清单5.17），当我运行Rspec时，总是会遇到一系列奇怪的意外错误。请注意，在本教程的这个阶段，页脚部分中的一个链接被有意注释掉，并且测试仍应通过本教程。如果我取消注释页脚部分中的链接，测试都会通过，但这对我来说没有任何意义。无论如何，以下是错误：

 rspec ./spec/requests/static_pages_spec.rb:17 # Static pages Home page should not have a custom page title
rspec ./spec/requests/static_pages_spec.rb:7 # Static pages Home page should have the content 'Sample App'
rspec ./spec/requests/static_pages_spec.rb:12 # Static pages Home page should have the title 'Home'
rspec ./spec/requests/static_pages_spec.rb:52 # Static pages Contact page should have the content 'Contact'
rspec ./spec/requests/static_pages_spec.rb:57 # Static pages Contact page should have the title 'Contact'
rspec ./spec/requests/static_pages_spec.rb:26 # Static pages Help page should have the content 'Help'
rspec ./spec/requests/static_pages_spec.rb:31 # Static pages Help page should have the title 'Help'
rspec ./spec/requests/static_pages_spec.rb:39 # Static pages About page should have the content 'About Us'
rspec ./spec/requests/static_pages_spec.rb:44 # Static pages About page should have the title 'About

这没有任何意义，因为当我查看每个页面的HTML时，内容/标题都清楚地显示在那里。但是，当我更仔细地查看日志时，我注意到页脚部分似乎始终存在错误

2) Static pages Home page should have the content 'Sample App'
     Failure/Error: visit '/static_pages/home'
     SyntaxError:
       /Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:10: syntax error, unexpected '<'
             <li> <a href="http://news.railstutorial.org/">News</a> </li>
              ^
       /Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:10: unknown regexp option - l
       /Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:11: syntax error, unexpected '<'
           </ul>
            ^
       /Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:12: unknown regexp options - av
       /Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:13: syntax error, unexpected '<'
       </footer>'.freeze;@output_buffer.to_s
        ^
       /Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:13: unterminated regexp meets end of file
     # ./app/views/layouts/application.html.erb:15:in `_app_views_layouts_application_html_erb___4305927437372856517_2202294640'
     # ./spec/requests/static_pages_spec.rb:8:in `block (3 levels) in <top (required)>'

2）静态页面主页应包含“示例应用”内容
失败/错误：访问“/静态页面/主页”
合成错误：
/Users/anant/helpondemand/sample_app2/app/views/layouts/_footer.html.erb:10:语法错误，意外“

footer class="footer">
  <small>
    <a href="http://railstutorial.org/">Rails Tutorial</a>
    by Michael Hartl
  </small>
  <nav>
    <ul>
      <li> <%= link_to "About",   '#' %> </li>
      <li> <%=# link_to "Contact", '#' %> </li>
      <li> <a href="http://news.railstutorial.org/">News</a> </li>
    </ul>
  </nav>
</footer>

<%# ... %>

   <li><%#= link_to "Contact", '#' %></li>