title: Invalid CSS after "Κ": expected "{", was "" in codesandbox
body: <p>I created a vue <a href="https://codesandbox.io/s/vue-template-tcyid" rel="nofollow noreferrer">application with vuetify in codesandbox</a></p>
  
  <p>The problem is codesandbox doesn't load sass file. I have sass-loader in package.json.</p>
  
  <p>Not sure what the problem is and the message is not clear.</p>
  
  <pre><code>Error: Invalid CSS after "Κ": expected "{", was ""
          on line 1 of node_modules/vuetify/src/styles/styles.sass
          from line 1 of /stdin
  &gt;&gt; Κ
     ^
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/RQPYG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RQPYG.png" alt="enter image description here"></a></p>