title: sass/bulma error : Error: File to import not found or unreadable: utilities/mixins.sass
body: <p>]I am trying to compile a css file from sass. I am using bulma (bulma.io) as the css framework. Here is the directory structure I have <img src="https://i.stack.imgur.com/ZV0lE.png" alt="enter image description here"> </p>
  
  <p>I am trying to change the grid.sass to output.css</p>
  
  <p>and I am running this command from the "bulma" dir</p>
  
  <pre><code> sass grid.sass output.css
  </code></pre>
  
  <p>but I get the following error</p>
  
  <pre><code>Error: File to import not found or unreadable: utilities/mixins.sass.
          on line 1 of grid.sass
    Use --trace for backtrace.
  </code></pre>
  
  <p>I don't know why this error is appearing. I am running this according the documentation. I am on CentOs machine, and have gem installed. </p>
  
  <pre><code>[root@foo bulma]# sass -v
  Sass 3.4.23 (Selective Steve)
  </code></pre>