vue bootstrap sass error

https://bootstrap-vue.org/docs#using-module-bundlers

BootstrapVue

 

import Vue from 'vue'
import { BootstrapVue, IconsPlugin } from 'bootstrap-vue'

// Import Bootstrap an BootstrapVue CSS files (order is important)
import 'bootstrap/dist/css/bootstrap.css'
import 'bootstrap-vue/dist/bootstrap-vue.css'

// Make BootstrapVue available throughout your project
Vue.use(BootstrapVue)
// Optionally install the BootstrapVue icon components plugin
Vue.use(IconsPlugin)

 

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