Looker Studio: KeyEvents data source not available in Looker, correctly set up in GA4

Hi,
my Looker Report ist not able to get two data sources on key events. It says “not able to connect to data source”.

All other data sources are displaying key events correctly.
The key events are correctly set up in GA4 and the connection to GA4’s property is working.

Is there are solution to this problem?

Thank you
Carolin

Has anyone seen this problem before?

I have the same problem. Want to add selected key Events to a table, then it is stating an error for that table. I also reconnected the analytics resource, does not work.