1, a compilation error sass-loader version is too high due to the current highest version 8.x, we need to return to 7.3.1
run:
Uninstall Sass-Loader --save npm-dev (uninstall your current version)
npm install sass-loader @7.3.1 --save-dev
2. If the above method does not work, or they have other related errors, you can try adding webpack.base.config.js inside:
Comments welcome message or explore the area had more questions.