Sass Loader Error: Invalid options object that does not match the API schema

Question

I\'m using VueJS with the framework VuetifyJS (v2.0.19). I\'m getting this error after running npm run serve:

Sass Loader has been initialise

Answer 1

I had the same issue when upgrading to sass-loader 10. I resolved it by replacing prependData with additionalData as per below:

{
  test: /\.scss$/,
  loader: 'sass-loader',
  options: {
    additionalData: `@import 'src/scss/helpers/variables';`
  }
}