Board Thread:Support Requests - Designing Your Wiki/@comment-27075564-20190408221638/@comment-5811199-20190409112537

Hi, please be aware that there are security issues with importing code in the User: namespace (and it's not allowed). This is because the page can be edited by anyone, and it bypasses the JavaScript review process.

You should copy the contents of User:Andrewds1021/JS/CategoryCSS into a MediaWiki: page (e.g. MediaWiki:CategoryCSS.js) and import the MediaWiki: page instead.