Zigbee2MQTT not starting , tips needed to find rootcause/solution

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2023-05-11T12:46:45.563Z zigbee-herdsman:adapter Failed to validate path: 'Error: spawn udevadm ENOENT'

It can’t find /dev/ttyACM0

Both, at the same time? You only have one “dongle” (coordinator) so you can only use one of them at a time.