I'm new to Foundation, and I'm trying to modify an off-canvas menu with the SCSS files. However, when I try to create something like this (https://foundation.zurb.com/building-blocks/blocks/off-canvas-full-screen.html), I get the following error when I try to run "npm start" on a fresh install (with the new SCSS from that previous link added to the _settings.scss file):
Error in plugin 'sass'
Error: no mixin named menu-base
on line 873 of src/assets/scss/_settings.scss
from line 3 of src/assets/scss/app.scss
>> @include menu-base;