The block editor requires JavaScript

Hi there, when I open a page to edit I get this notification

The block editor requires JavaScript

https://imgur.com/b6POGXh on all pages and in all browsers.

This has started just recently, and JavaScript is enabled in the browser.

This is maybe a Gutenberg blocks issue, but I found a similar issue in this forum, so I post it here.
https://generatepress.com/forums/topic/error-block-editor-requires-javascript/

I can edit the pages and apperantly this has no influence.
Any idea why this is notification suddenly appears?

Thanks