Why is the css file not being generated?

Question

webpack

webpack:

module.exports = {
  mode: "development",
  entry: './src/script.js',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: './src/index.html'
    }),
    new MiniCssExtractPlugin({
      filename: '[name].css'
    })
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /\.sass$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.js$/,
        use: 'babel-loader'
      },
      {
        test: /\.(png|jpg|jpeg|svg|gif)$/,
        use: ['file-loader']
      },
      {
        test: /\.(ttf|woff|woff2)$/,
        use: ['file-loader']
      }
    ]
  }
}

There is no css file in the dist folder, what's wrong? (in the main js file I imported the sass file)