一样的问题

me too

After spending more than a week to fix the error (I almost give up), I found the solution here:
arackaf/customize-cra#315 (comment)

TLDR - add the following lines in config-overrides.js:

const { override, fixBabelImports, addLessLoader, adjustStyleLoaders } = require('customize-cra');

module.exports = override(
  // Load antd
  fixBabelImports('import', { ... }),

  // Add `javascriptEnabled` and antd theme configuration
  // to the Less loader
  addLessLoader({ ... }),

  adjustStyleLoaders(({ use: [, , postcss] }) => {
    const postcssOptions = postcss.options;
    postcss.options = { postcssOptions };
  })
);

After spending more than a week to fix the error (I almost give up), I found the solution here: arackaf/customize-cra#315 (comment)

TLDR - add the following lines in config-overrides.js:

const { override, fixBabelImports, addLessLoader, adjustStyleLoaders } = require('customize-cra');

module.exports = override(
  // Load antd
  fixBabelImports('import', { ... }),

  // Add `javascriptEnabled` and antd theme configuration
  // to the Less loader
  addLessLoader({ ... }),

  adjustStyleLoaders(({ use: [, , postcss] }) => {
    const postcssOptions = postcss.options;
    postcss.options = { postcssOptions };
  })
);

This works for me! Thanks, dude, it is a very helpful answer.

Guys, please I'm new to coding and don't know how to implement this in my code. Please can anyone help me further

After spending more than a week to fix the error (I almost give up), I found the solution here: arackaf/customize-cra#315 (comment)

TLDR - add the following lines in config-overrides.js:

const { override, fixBabelImports, addLessLoader, adjustStyleLoaders } = require('customize-cra');

module.exports = override(
  // Load antd
  fixBabelImports('import', { ... }),

  // Add `javascriptEnabled` and antd theme configuration
  // to the Less loader
  addLessLoader({ ... }),

  adjustStyleLoaders(({ use: [, , postcss] }) => {
    const postcssOptions = postcss.options;
    postcss.options = { postcssOptions };
  })
);

It's very useful!! Thanks for your help!

encountered same problem, after I deleted below config in vue.config.js, it worked:
css: {,
loaderOptions: {
postcss: {
plugins: [
require("postcss-pxtorem")({
rootValue: 14,
propList: ["*"],
}),
],
},
},
},