Issue: The CSS loader did not provide a valid string output in Angular version 12.1.1

I am encountering 2 error messages when trying to compile my new project:

Error: Module not found: Error: Can't resolve 'C:/Users/Avishek/Documents/practice/frontend/src/app/pages/admin/authentication/authentication.component.css' in 'C:\Users\Avishek\Documents\practice\frontend'

and

Error: The loader "C:/Users/Avishek/Documents/practice/frontend/src/app/pages/admin/authentication/authentication.component.css" didn't return a string.

This issue is new to me as I have never faced it before, even though I recently created a project with the same angular version. Here are my tsconfig.json & package.json files respectively.

tsconfig.json

{
  "compileOnSave": false,
  ...
    }
  },
  "angularCompilerOptions": {
    "enableI18nLegacyMessageIdFormat": false,
    ...
    }
  }
}

package.json

{
  "name": "project",
  "version": "1.0.0",
  "scripts": {
  ...
},
  ...
...
}

I need assistance in identifying and resolving this issue. Thank you for your help.

javascriptangulartypescriptnpmangular-cli

Answer №1

The issue I encountered stemmed from the fact that my project was set up to utilize scss files, but I inadvertently pasted code from a example that utilized css files. As a result, one of my components contained the following:

@Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css']
})

The presence of the css file in the styleUrls property triggered the error.

Answer №3

In my project, I encountered an issue due to special characters in the file path of the folder where it was set up. This caused the Angular project build to be unable to access the .css file. Below are the changes I made to resolve this problem:

before  G:\Projects\C#\WebAPIProject\FrontEnd\AngularUI 
after   G:\Projects\CSharp\WebAPIProject\FrontEnd\AngularUI

I realized there was a problem when attempting to open the file referenced in the terminal window that was causing the error. Clicking on 'open file in editor' did not successfully open the file in the editor as expected.

Answer №4

If you are utilizing SCSS in your project, make sure to update your styleUrls as follows:

@Component({
  selector: 'app-hero-detail',
  templateUrl: './hero-detail.component.html',
  styleUrls: [ './hero-detail.component.css' ] //Notice
})

Change it to:

@Component({
  selector: 'app-hero-detail',
  templateUrl: './hero-detail.component.html',
  styleUrls: [ './hero-detail.component.scss' ] //Notice
})

This adjustment has been effective for my own project.

Answer №5

I successfully resolved the issue by carefully reviewing the file path details while working on various projects with multiple files. I realized that my path required an extra "/".

Answer №6

In my case, I realized that the scss and CSS file were missing from my folder, so I simply removed the line styleUrls: [ './hero-detail.component.scss' ]

After removing it, everything worked smoothly for me.

Answer №7

To update the templateUrl, simply adjust the directory to point to yourcomponent.html and then add your HTML code in that specific folder.

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