Add extractComments: false to webpack.config.js

const TerserPlugin = require('terser-webpack-plugin');
.
.
.

  optimization: {
    minimizer: [new TerserPlugin({
      extractComments: false,
    })],
  },

Add extractComments: false to webpack.config.js

 
const TerserPlugin = require('terser-webpack-plugin');
.
.
.
module.exports = {
.
.
.
  optimization: {
    minimizer: [new TerserPlugin({
      extractComments: false,
    })],
  },
.
.
.
};