[1901] Error building Scss

Hello,

I am trying to compile my project the last version of Nuxt (I was using alpha5) and I am getting Error with Scss special chars. I am using node 6.11 and Ubuntu 16.04

Here is the error message on the console : It refers to the contents of scss import within a Vue page

Error : Module build failed  // the error points the @ behind import
@import "~/assets/css/SCSS_partials/variables";

// nuxt.config.js extract

css: [
    // SCSS file in the project
    '@/assets/css/main.scss'
 ]

What should I do to make it works ?

Many thanks

Matthieu