Failed at the zigbee2mqtt@1.10.0 start script ,noob here

Hello guys,

iam totally new here and a Linux noob.
Its running on a raspberry 3 b+ with installed openhab2

Your configuration.yaml is very incorrect. Spaces are very important in yaml ! You need something as this :

homeassistant: false
permit_join: true
  base_topic: zigbee2mqtt
  server: 'mqtt://localhost'
  user: xxx
  password: xxx
  port: /dev/ttyACM0