NullReferenceError

This issue is the same as this one: https://github.com/kriasoft/aspnet-starter-kit/issues/21 You'll need to install an earlier version of Webpack, or fix the references to postcss in webpack.js

I also was having this issue in Calibre-web, using the linuxserver image: ``` apt update && apt install sqlite echo ".dump" | sqlite3 metadata.db | sqlite3 metadata-fixed.db mv metadata.db metadata-old-backup.db...