title: `<module:Templates>': uninitialized constant Tilt::CompileSite (NameError) using Sinatra / Unicorn
body: <p>I'm new in the Ruby world. I created my first app using Sinatra, and I'm having some trouble on my production server.</p>
  
  <p>When I run <code>unicorn -c randmovie_unicorn.rb</code> on my local machine, it works just fine. But in production, I get this error:</p>
  
  <pre><code>&lt;module:Templates&gt;': uninitialized constant Tilt::CompileSite (NameError)
  </code></pre>
  
  <p>In my <code>randmovie_unicorn.rb</code> file:</p>
  
  <pre><code>preload_app true  
  working_directory "./"  
  listen 8006  
  worker_processes 2  
  timeout 30
  </code></pre>
  
  <p>I'm not using HAML or anything similar.</p>
  
  <p>Could somebody help me with that? Thanks!</p>