Homekit does not work after upgrading to OH4.1.1

Hello,
after upgrade von OH3 to OH4, homekit integration does not work anymore

In the log I can see “[WARN ] [nhab.io.homekit.internal.HomekitImpl] - could not initialize HomeKit bridge: Invalid argument: no further information”

Reinstalling Homekit Addon did not help

Any ideas? - Thank you very much!