Angular build error: Could not resolve "src/custom-theme.scss" — no import found in any...

I'm getting the following error when building my Angular project:

Error: Could not resolve "src/custom-theme.scss"
angular:styles/global:styles:1:8:
1 │ @import 'src/custom-theme.scss';
╵ ~~~~~~~~~~~~~~~~~~~~~~~


However, I have searched all my project files — including all .scss files, angular.json, and component styles — and there is no line importing or referencing src/custom-theme.scss. I have also removed and added the @angular/materials no change.

I also checked:

• 
  angular.json styles array (no mention of custom-theme.scss)
  
  
• 
  All global stylesheets (src/styles.scss, src/styles/global.scss)
  
  
• 
  Any component or library SCSS files
  
  
• 
  I deleted node_modules, .angular cache, and rebuilt the project
  
  
• 
  Ran ng build with verbose logging to trace the error
  

But Angular still tries to resolve this file and fails.

The error message references angular:styles/global:styles:1:8 which points to a global styles file at line 1. I verified no import is in any global styles file.

I suspect a cache or hidden reference, but can't find it.

Where else could Angular be loading or referencing this SCSS import?

How can I find or fully remove this hidden import so the build succeeds?

Are there any Angular CLI, Material, or third-party configs that might inject this reference automatically?

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