Worldanvil Browser won't work in version 1.4.5: TypeError: An error occurred while rendering WorldAnvilBrowser 5. category.articleIds is undefined

[Cyrgan]

Worldanvil Browser won't start in version 1.4.5

Attempting to open the WA browser with the WA Button, which does not work (after correctli setting the WA Api key ofc). Checking the console gives the following error message:

TypeError: An error occurred while rendering WorldAnvilBrowser 5. category.articleIds is undefined

In consequence the WorldAnvilbrowser in Forge and Foundry does not open.

The issue does not seem to persist in Version 1.4.3.

[Tillerz]

All the button does for me right now are a few API requests to WA and then

foundry.js:655 
Error: An error occurred while rendering WorldAnvilBrowser 27. Cannot read properties of undefined (reading 'OBSERVER')
    at Hooks.onError (foundry.js:654:24)
    at 🎁call_wrapped [as call_wrapped] (libWrapper-wrapper.js:507:22)
    at 🎁Hooks.onError#lib-wrapper (listeners.js:138:11)
    at 🎁Hooks.onError#0 (libWrapper-wrapper.js:187:52)
    at foundry.js:5794:13
Caused by: TypeError: Cannot read properties of undefined (reading 'OBSERVER')
    at WorldAnvilBrowser.getContentTree (journal.js:123:103)
    at async WorldAnvilBrowser.getData (journal.js:81:18)
    at async WorldAnvilBrowser._render (foundry.js:5837:18)

Foundry 12, Build 330