Error: Failed to connect to the adapter

zigbee2mqtt add-on version: 1.16.2.2 (stable)

Operating environment (HassOS, Virtual Machine, Device/platform running Home Assistant): Home Assistant OS 5.9 installed though OVA. Supervisor 2020.12.7 (stable)

Description of problem: Fresh install, the plugin cannot connect to the MQTT broker. Tried to install Zigbee2MQTT on a Debian with same configuration and everything works as expected. The problem seems to be related to the home assistant plugin only.

Your entire configuration from the frontend (with sensitive fields redacted):

data_path: /share/zigbee2mqtt
external_converters: []
devices: devices.yaml
groups: groups.yaml
homeassistant: false
permit_join: true
mqtt:
  base_topic: zigbee2mqtt
  server: 'mqtt://core-mosquitto'
  user: mqtt
  password: my_super_secure_password
serial:
  port: /dev/ttyACM0
advanced:
  log_level: info
  pan_id: 6754
  channel: 11
  network_key:
    - 1
    - 3
    - 5
    - 7
    - 9
    - 11
    - 13
    - 15
    - 0
    - 2
    - 4
    - 6
    - 8
    - 10
    - 12
    - 13
  availability_blocklist: []
  availability_passlist: []
device_options: {}
blocklist: []
passlist: []
queue: {}
frontend:
  port: 8099
experimental:
  new_api: true
socat:
  enabled: false
  master: 'pty,raw,echo=0,link=/dev/ttyZ2M,mode=777'
  slave: 'tcp-listen:8485,keepalive,nodelay,reuseaddr,keepidle=1,keepintvl=1,keepcnt=5'
  restartdelay: 2
  initialdelay: 2
  options: '-d -d'

Your logs from Home Assistant

Zigbee2MQTT:error 2020-12-28 19:58:22: Error while starting zigbee-herdsman Zigbee2MQTT:error 2020-12-28 19:58:22: Failed to start zigbee Zigbee2MQTT:error 2020-12-28 19:58:22: Exiting... Zigbee2MQTT:error 2020-12-28 19:58:22: Error: Failed to connect to the adapter (Error: SRSP - SYS - ping after 6000ms) at ZStackAdapter. (/zigbee2mqtt-1.16.2/node_modules/zigbee-herdsman/dist/adapter/z-stack/adapter/zStackAdapter.js:94:31) at Generator.throw () at rejected (/zigbee2mqtt-1.16.2/node_modules/zigbee-herdsman/dist/adapter/z-stack/adapter/zStackAdapter.js:25:65) npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! zigbee2mqtt@1.16.2 start: node index.js npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the zigbee2mqtt@1.16.2 start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! /root/.npm/_logs/2020-12-28T18_58_22_218Z-debug.log

Note: Tried with the IP : same issue. Tried to connect though another client (Zigbee2Mqtt installed on a Debian box) : it works No network issue : I can successfully telnet my HomeAssistant on the 1884 tcp port

danielwelch / hassio-zigbee2mqtt

Error: Failed to connect to the adapter #505