NPM + Yarn Issue with Node-Sass

[Corb3nik]

When installing something via Yarn, a new error message pops up when running bundle exec foreman start -f Procfile.dev.

Error message :

17:33:35 webpack-watcher.1 | ERROR in ./~/css-loader!./~/vue-loader/lib/style-rewriter.js?{"id":"data-v-0da0dd94","scoped":false,"hasInlineConfig":false}!./~/sass-loader/lib/loader.js!./~/vue-loader/lib/selector.js?type=styles&index=0!./app/javascript/packs/App.vue
17:33:35 webpack-watcher.1 | Module build failed: Error: Node Sass does not yet support your current environment: OS X 64-bit with Unsupported runtime (57)

This seems to be a common issue, as explained here : sass/node-sass#1918

If you come across this issue, the quick fix is to run npm rebuild node-sass.