I encountered the same problem and found the solution: Open angular.json file; In every app configuration set: “stylePreprocessorOptions”: { “includePaths”: [ “./node_modules” ] } remove ~ in every import;
“.angular/cache” folder should be ignored by your version control system (git, svn etc…) Example for git, add this line to .gitignore file .angular/cache (source : ng new command with @angular/cli v13)
Just remove the “extractCss”: true from your production environment, it will resolve the problem. The reason about it is extractCss is deprecated, and it’s value is true by default. See more here: Extracting CSS into JS with Angular 11 (deprecated extractCss)