ZCM 23.4 Appliance with February 2024 Appliance Update does not show ZENworks Configuration Summary Screen

Hi ,

after upgrading ZSM 23.3 appliances to 23.4 AND applying the Ferbruary 2024 appliance update

the ZENworks Configuration Summary Screen shows :

Configuration Failed
ZENworks configuration has failed. To review the configuration log, click View Configuration Log. You must re-deploy and configure the ZENworks appliance.
We see this on about five systems, it looks like every ZCM appliance with 23.4 and the February 2024 appliance updates is affected.
But all affected ZCM appliances are working. Looks like only the ZENworks Configuration Summary Screen is affected.
Any ideas how to fix this?
Thank you very much.
Best regards
Thomas