Can't build SCSS files in production environment

[Zhifan Ye]

When building the project in production environment, only .min.js and .min.js.map are created. It seems that SCSS files hasn't been built.

Reproduce:

• Clone the repo and change directory into it.
• Install dependencies.
• Run npm run build.
• Check dist/ folder, and there are no new .css and .css.map files.

OS and versions:

• OS: Manjaro
• APlayer: 1.10.1