HUE does not connect to matter server - need help

HA was running with Hue connected to the matter server.
Device connection stopped and i tried reload matter server, reboot HUE, reboot HA, reboot Apple TV.

Finally, I uninstalled and reinstalled Matter Server. I tried pairing codes from Apple HomeKit and the Hue Bridge, but the pairing process keeps failing.
Connecting HUE Bridge with matter to Homekit, Alexa and google works.

Any Idea?

/edit The log shows, if a connection request starts:
ERROR [chip.storage] [Errno 2] No such file or directory: ‘/data/chip.json’