title: `rescue in block (2 levels) in require': There was an error while trying to load the gem 'sass-rails'. (Bundler::GemRequireError)
body: <p>I finish to install rails 5 at my ubuntu system(16.04.2 LTS) and I'm with this error when I try to run rails server command.</p>
  
  <pre><code>`rescue in block (2 levels) in require': There was an error while trying to load the gem 'sass-rails'. (Bundler::GemRequireError)
  </code></pre>
  
  <p>Gem Load Error is: uninitialized constant Sass::Script
  Did you mean?  ScriptError</p>
  
  <p>When I write bundle update, the prompt show me this message:</p>
  
  <pre><code>The dependency tzinfo-data (&gt;= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
  </code></pre>
  
  <p>and then it update well ... and show ~≳ Using sass-rails 5.0.6</p>
  
  <p>Please help-me guys, regards!</p>