/patterns link not working

Hi @bunthorne,
I need more information to reproduce this issue.

I got the same error on my production installation that is using Olivero theme. Link just became available with 8.x-1.8 update.

What configuration do you need to know about? I have UI Patterns installed and many other UI Suite modules:

UI Examples, UI Examples Defaults, UI Patterns (but not UI Patterns Display Suite or Field Group), UI Patterns Layouts, UI Patterns Library, UI Patterns Settings, UI Patterns Views, UI Patterns Views Styles, UI Skins, UI Styles, UI Styles Block, UI Styles CKEditor 5, (not UI Styles Entity Status), UI Styles Layout Builder, UI Styles Library, UI Styles Page, and UI Styles Views.