date missing

Missing author. Check out: https://instantview.telegram.org/contest/www1.wdr.de/template4/?url=http%3A%2F%2Fwww1.wdr.de%2Fnachrichten%2Fwetter-nrw-134.html

IV not generated. Check Out: https://instantview.telegram.org/contest/www1.wdr.de/template4/?url=http%3A%2F%2Fwww1.wdr.de%2Fkultur%2Fkunst%2Faleksandra-domanovic-bundeskunsthalle-bonn-100.html

Either the related video should be playable or IV should not be generated for this page

unsupported audio content

iv not generated

There's an audio iframe but the audio file can be downloaded so IMO it can have IV page without the embed part.

Rudimentary content not removed

Slideshow must not be used here. Check out 6.4:
EXCEPTION! Slideshows must not be used:

+ When the article consists entirely of a slideshow and there's no other content.
+ When the article uses images/videos/GIFs with captions as the main medium (e.g.: travel blogs that show many photos with captions, step-by-step crafting guides, cooking recipes, etc.).

Rudimentary content not removed