I have a lot of problems to install Zigbee2MQTT on my NUC (Ubuntu Server) :
1/ I flashed my CC2531 with the last "router-cc253x-std.hex"(here : https://github.com/Koenkk/Z-Stack-firmw ... ter/router : OK
2/ When I plug my CC2531 on my NUC. The command (ls -l /dev/serial/by-id) show me only my RFXCOM, I don't see CC2531.

3/ I follow this procedure (https://github.com/Koenkk/zigbee2mqtt.i ... ee2mqtt.md) but :
3.1 I don't undestand the command "sudo chown -R pi:pi /opt/zigbee2mqtt", Could you explain me ? Replace pi:pi by what ?
3.2 I have an error during install npm : Error: Can't find Python executable "python", you can set the PYTHON env variable. What is the problem ?
Thanks for your support.