ZHA can't connect to ZigStar GW after update i think

Hello,

i can connect to my Zigbee LAN Gateway.
The Firmware was today the newest from the ZigStar Website.
This Setup worked for the lasts month without any problems and i do only HA Updates and so the Version of HA is 2024.10.3
And last week i don’t have any trouble with is and now after restart HA the Zigbbe integrations can’t connect to the Zigbee LAN Gateway anymore.
The connfiguration is socket://IP:6638 with baud 115200 and i don’t change this, but today a can’t connect.

A…last big changes was the upgrade from debian bullseye to bookworm

Any idears about this problem?

Thanks for any help

P.S.:
I have a console output at the moment when ZHA will connect to the socket
[45049] → ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef ef