deCONZ in state „not connected“

Hello guys. I need your help.

I Installed the Home Assistent Operating System (flashed it onto an sd card) with the official URI (Raspberry Pi - Home Assistant). After the onboarding i tried to connect my lights but deCONZ is in a „not connected“ state (using a RaspBee). Do I need to change a file or put commands in the cli to get that working?! And do I need the „install code“ on the RaspBee packaging?

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