Zigbee@mqtt am MQTT

Hi,

I’m trying to use zigbee2mqtt without success.
I installed the sniffer and I paired the aqara devices. I get the status on zigbee@mqtt. This is perfect.
The problem is with MQTT addon. I have the default config, and i get a socket error. Do you know why?

[12:19:55] INFO: Setup mosquitto configuration
[12:19:55] WARNING: SSL not enabled - No valid certs found!
[12:19:55] INFO: No local user available
[12:19:55] INFO: Initialize Hass.io Add-on services
[12:19:55] INFO: Initialize Home Assistant discovery
[12:19:55] INFO: Start Mosquitto daemon
1564229995: mosquitto version 1.6.3 starting
1564229995: Config loaded from /etc/mosquitto.conf.
1564229995: Loading plugin: /usr/share/mosquitto/auth-plug.so
1564229995:  ├── Username/password checking enabled.
1564229995:  ├── TLS-PSK checking enabled.
1564229995: |-- *** auth-plug: startup
1564229995:  └── Extended authentication not enabled.
1564229995: Opening ipv4 listen socket on port 1883.
1564229995: Opening ipv6 listen socket on port 1883.
1564229995: Opening websockets listen socket on port 1884.
1564229995: Warning: Mosquitto should not be run as root/administrator.
1564229996: New connection from 172.30.32.1 on port 1883.
[INFO] found hassio on Home Assistant
1564229998: New client connected from 172.30.32.1 as mqttjs_secret (p2, c1, k60, u'hassio').
1564230500: New connection from 192.168.10.170 on port 1883.
1564230500: Socket error on client <unknown>, disconnecting.

Who is the client?

Solved.
I added username and password on config.