Docker mqtt and zigbee2mqtt setup problem cp: can't stat '/app/configuration.example.yaml'

Hoping someone can help here. I’ve followed the tutorials from Home Automation Guy on setting up Docker, Home Assistant, MQTT and Zigbee2Mqtt. Everything was going well until the end. I cannot get zigbee2mqtt to connect and I’m getting the following error in my portainer logs:

cp: can't stat '/app/configuration.example.yaml': No such file or directory

Here is the most recent video I followed.

Running Ubuntu 22.04 LTS on Intel NUC with Sonoff Zigbee ZBDongle-E.

I’ve been googling for hours and not finding anything helpful.

Probably you missed the very first step of the guide (I found this because I just did the exact same… oops :grimacing:). Pull the configuration file from the github repo before starting the container: Docker | Zigbee2MQTT

Interesting. I did follow the guide and pulled the repo before i started the container. Yet I am unable to access the zigbee2mqtt page.

Did you set your dongle to ezsp

  adapter:  ezsp

I added the serial adapter and now my logs show this error:

Zigbee2MQTT:info  2023-09-18 15:53:55: Logging to console and directory: '/app/data/log/2023-09-18.15-53-55' filename: log.txt
Zigbee2MQTT:info  2023-09-18 15:53:55: Starting Zigbee2MQTT version 1.33.0 (commit #7ee207f)
Zigbee2MQTT:info  2023-09-18 15:53:55: Starting zigbee-herdsman (0.18.5)
Error: Reset error: Error: {"sequence":-1} after 10000ms
    at /app/node_modules/zigbee-herdsman/src/adapter/ezsp/driver/uart.ts:299:23
    at Queue.executeNext (/app/node_modules/zigbee-herdsman/src/utils/queue.ts:32:32)

But I am still not able to access the front end of Zigbee2Mqtt.

# Home Assistant integration (MQTT discovery)
homeassistant: true
fronted: true

# allow new devices to join
permit_join: true

# MQTT settings
  # MQTT base topic for zigbee2mqtt MQTT messages
  base_topic: zigbee2mqtt
  # MQTT server URL
  server: 'mqtt://'
  # MQTT server authentication, uncomment if required:
  user: hass
  password: _PASSWORD_

# Serial settings
  # Location of CC2531 USB sniffer
  port: /dev/ttyACM0
  adapter: ezsp

If I remove the adapter again I get the error again

Found my issue. Check if you have ZHA enabled. Turned out I had that enabled. Removed ZHA and waited 20min and now it started just fine.

I am still stuck with no access to the fronted. Not sure what is the cause here.