Check this to find out the port of your adapter. The port of your serial adapter changed.Texas Instruments LAUNCHXL-CC26X2R1 coordinator only: verify that you have the correct revision.CC2531 coordinators only: press the reset button on the device.Texas Instruments LAUNCHXL-CC1352P-2/CC26X2R1 only: press the reset button on the device.In case of a CC2530 or CC2531 adapter, verify that don't have a CC2540.For Openhab users: disable zwave binding.Raspberry Pi users: use a good power supply.Error: Resource temporarily unavailable Cannot lock port.Error: Coordinator failed to start, probably the panID is already in use, try a different panID or channel.Method 2: Add your user to specific groups.Method 1: Give your user permissions on every reboot.Verify that the user you run Zigbee2MQTT as has write access to the port.Which port should I use for Texas Instruments LAUNCHXL-CC26X2R1/CC1352P-2, /dev/ttyACM0 or /dev/ttyACM1?.Verify that you put the correct port in configuration.yaml.
Most of the time this is caused by Zigbee2MQTT not being able to communicate with your Zigbee adapter.
