Font Awesome in Laravel 5.7

I'm trying to include Font Awesome to a Laravel 5.7 Project.

For this I did this:

1) npm install --save-dev @fortawesome/fontawesome-free --check and the folder is in node_modules

2) In Resources / sass / app.scss I add this:

$fa-font-path: "../webfonts";

// Bootstrap
@import '~bootstrap/scss/bootstrap';
@import '~@fortawesome/fontawesome-free/scss/fontawesome.scss';
@import '~@fortawesome/fontawesome-free/scss/solid.scss';
@import '~@fortawesome/fontawesome-free/scss/regular.scss';
@import '~@fortawesome/fontawesome-free/scss/brands.scss';

3) Execute

 npm run development -- --watch

4) I see that there are files in public / fonts / vendor / @ fortawesome / fontawesome-free /

But when I go to the browser the icons appear as broken:

What am I doing wrong?

thanks!