LOG:

[Info] Configuration file found: /share/zigbee2mqtt/configuration.yaml
[Info] Configuration written to /share/zigbee2mqtt/configuration.yaml
2019-04-19T15:22:59: PM2 log: Launching in no daemon mode
2019-04-19T15:22:59: PM2 log: App [npm:0] starting in -fork mode-
2019-04-19T15:22:59: PM2 log: App [npm:0] online
> zigbee2mqtt@1.3.1 start /zigbee2mqtt-1.3.1
> node index.js
  zigbee2mqtt:info 4/19/2019, 3:23:02 PM Logging to directory: '/share/zigbee2mqtt/log/2019-04-19.15-23-02'
  zigbee2mqtt:info 4/19/2019, 3:23:02 PM Starting zigbee2mqtt version 1.3.1 (commit #unknown)
  zigbee2mqtt:info 4/19/2019, 3:23:02 PM Starting zigbee-shepherd
  zigbee2mqtt:info 4/19/2019, 3:23:03 PM zigbee-shepherd started
  zigbee2mqtt:info 4/19/2019, 3:23:03 PM Coordinator firmware version: '20190223'
  zigbee2mqtt:info 4/19/2019, 3:23:03 PM Currently 0 devices are joined:
  zigbee2mqtt:info 4/19/2019, 3:23:03 PM Zigbee: disabling joining new devices.
  zigbee2mqtt:info 4/19/2019, 3:23:03 PM Connecting to MQTT server at 192.168.149.2
/zigbee2mqtt-1.3.1/node_modules/q/q.js:155
                throw e;
                ^
Error: Missing protocol
    at Object.connect (/zigbee2mqtt-1.3.1/node_modules/mqtt/lib/connect/index.js:64:13)
    at MQTT.connect (/zigbee2mqtt-1.3.1/lib/mqtt.js:39:28)
    at Controller.onZigbeeStarted (/zigbee2mqtt-1.3.1/lib/controller.js:113:19)
    at zigbee.start (/zigbee2mqtt-1.3.1/lib/controller.js:173:26)
    at shepherd.start (/zigbee2mqtt-1.3.1/lib/zigbee.js:78:17)
    at /zigbee2mqtt-1.3.1/node_modules/q/q.js:2055:17
    at runSingle (/zigbee2mqtt-1.3.1/node_modules/q/q.js:137:13)
    at flush (/zigbee2mqtt-1.3.1/node_modules/q/q.js:125:13)
    at process._tickCallback (internal/process/next_tick.js:61:11)
npm
 ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR!
 zigbee2mqtt@1.3.1 start: `node index.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the zigbee2mqtt@1.3.1 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/2019-04-19T13_23_03_851Z-debug.log
2019-04-19T15:23:05: PM2 log: App [npm:0] exited with code [1] via signal [SIGINT]
2019-04-19T15:23:05: PM2 log: App [npm:0] starting in -fork mode-
2019-04-19T15:23:05: PM2 log: App [npm:0] online
> zigbee2mqtt@1.3.1 start /zigbee2mqtt-1.3.1
> node index.js
  zigbee2mqtt:info 4/19/2019, 3:23:08 PM Logging to directory: '/share/zigbee2mqtt/log/2019-04-19.15-23-07'
  zigbee2mqtt:info 4/19/2019, 3:23:08 PM Starting zigbee2mqtt version 1.3.1 (commit #unknown)

Config of addon:
{
  "data_path": "/share/zigbee2mqtt",
  "homeassistant": true,
  "permit_join": false,
  "mqtt_base_topic": "zigbee2mqtt",
  "mqtt_server": "192.168.149.2",
  "serial_port": "/dev/ttyACM0",
  "devices": [],
  "network_key": [],
  "mqtt_user": "!secret mqtt_username",
  "mqtt_pass": "!secret mqtt_password"
}