Hi Mirko,
I'm using PHP 7.4.
This is what the Chrome console displays:
Error with Permissions-Policy header: Unrecognized feature: 'interest-cohort'.
jquery-migrate.min.js?770274432f86646ff723a453c6fe7527:2 JQMIGRATE: Migrate is installed, version 1.4.1
undefined:1 GET https://wfrg.nl/index.php/de-wfrg/faq/undefined 404
Image (async)
(anonymous) @ carouselck.min.js?ver=2.0.0:1
each @ jquery.min.js?770274432f86646ff723a453c6fe7527:2
Z @ carouselck.min.js?ver=2.0.0:1
(anonymous) @ faq-mgr:212
u @ jquery.min.js?770274432f86646ff723a453c6fe7527:2
fireWith @ jquery.min.js?770274432f86646ff723a453c6fe7527:2
ready @ jquery.min.js?770274432f86646ff723a453c6fe7527:2
_ @ jquery.min.js?770274432f86646ff723a453c6fe7527:2
The 404 error occurs on every page, therefore with various GET url's.
This is what i get from the Firefox console:
Lay-out werd geforceerd voordat de pagina volledig was geladen. Als stylesheets nog niet zijn geladen, kan dit een flits van onopgemaakte inhoud veroorzaken. jquery.min.js:2:95707
JQMIGRATE: Migrate is installed, version 1.4.1 jquery-migrate.min.js:2:552
(1st line translation: Lay-out was forced before the page was fully loaded.)
I hope someone has a clue where this comes from, because i don't.