[Bug]: import url(); not working

[Lalit64]

Preflight Checklist

• I use the latest version of YouTube Music (Application).
• I have searched the issue tracker for a bug report that matches the one I want to file, without success.
• I understand that th-ch/youtube-music has NO affiliation with Google or YouTube

YouTube Music (Application) Version

3.7.1

Checklists

• I use the portable version of the YouTube Music Application.
• I can reproduce this issue in the official version of (WEB) YTM.

What operating system are you using?

macOS

Operating System Version

macOS Sequoia 15.2

What CPU architecture are you using?

arm64 (including Apple Silicon)

Last Known Working YouTube Music (Application) version

Reproduction steps

Import a css file from options -> visual tweaks -> themes that contains importing another css file from the web, see that the theme doesnt apply

Expected Behavior

the theme should apply

Actual Behavior

the theme doesn't apply

Enabled plugins

1. Ad Blocker
2. Navigation

Additional Information

No response