[TYPO3-ttnews] News: Oops, an error occured! - Argument "class" was not registered.

[Jordan van Bergen]

I upgraded news to v1.3.1 and now as soon as I go to an individual
newsitem on a single page I see:

Oops, an error occured!
Argument "class" was not registered.

What's happening here? Didn't have time to look at news for 2 months
and decided to upgrade typo3 tot v4.5.10 today and decided to upgrade
al extensions. News single for a single news item is broken now with
this message:

Oops, an error occured!
Argument "class" was not registered.

Any suggestions?

Regards
Jordan