SassError: semicolons aren't allowed in the indented syntax.

ValidationError: Invalid options object. Sass Loader has been initialized using an options object that does not match the API schema.

src
├── assets
│   └── scss
│ 　　　　├── main.scss
│ 　　　　└── _variables.scss
│

module.exports = {
  css: {
    loaderOptions: {
      sass: {
        prependData: `@import "@/assets/scss/main.sass"`
      },
      scss: {
        prependData: `@import "@/assets/scss/main.scss";`
      }
    }
  },
  "transpileDependencies": [
    "vuetify"
  ]
}