When I acess the page
https://pt.wikipedia.org/wiki/Especial:ArticleFeedback?uselang=en
I se the following error in Google Chrome's console:
GET https://bits.wikimedia.org/static-1.21wmf9/skins/ext.articleFeedback.dashboard?303-4 404 (Not Found)
Version: master
Severity: normal
Whiteboard: wikimedia[unmaintained]
URL: https://pt.wikipedia.org/wiki/Especial:ArticleFeedback?uselang=en