Elasticsearch client not initialized. Restart Trudesk!

Hello,
I am having slight hiccups with the application … I am running the entire thing via docker-compose

Here is my docker-compose.yml

version: '2.1'
services:
  trudesk:
    image: polonel/trudesk:1
    restart: always
    ports:
      - "8118:8118"
    dns:
      - "1.1.1.1"
      - "8.8.8.8"
    environment:
      NODE_ENV: production
      TRUDESK_DOCKER: "true"
      TD_MONGODB_SERVER: mongo
      TD_MONGODB_DATABASE: trudesk
      USE_XFORWARDIP: "true"
    volumes:
      - ./data/trudesk/uploads:/usr/src/trudesk/public/uploads
      - ./data/trudesk/backups:/usr/src/trudesk/backups
  mongo:
    image: mongo:5.0-focal
    restart: always
    ports:
      - "27017:27017"
    volumes:
      - ./data/configdb:/var/lib/mongo
      - ./data/db:/data/db:rw
  elasticsearch:
    image: elasticsearch:8.0.0
    restart: always
    environment:
      - xpack.security.enabled=false
      - xpack.security.http.ssl.enabled=false
      - discovery.type=single-node
      - bootstrap.memory_lock=true
    mem_limit: 1073741824
    ulimits:
      memlock:
        soft: -1
        hard: -1
    ports:
      - "9200:9200"
      - "9300:9300"
    volumes:
      - ./data/es/data:/usr/share/elasticsearch/data

I tried shutting down the docker images and start them again … everything is fine - data are persistent … it just happened yesterday that somehow, the application reset itself spontaneously … any idea why this could happen? So I had to reconfigure all things (not to mention I lost all data) … I am still checking why did happens and trying to look for a pattern … none found yet

Anyway, the last piece missing in the setup is elastic search… I originally used v8 but after going through some discussions here, I tried downgrading to 6.8 (which turned out to be working for someone) …

I can see the ES is running fine (docker ps) plus I can even access the http://my_host:9200 address and it gives me back this JSON message

// 20230113082215
// http://my_host:9200/

{
  "name": "db231ec80724",
  "cluster_name": "docker-cluster",
  "cluster_uuid": "rkK0klYTTZqGuvJRtrHyJQ",
  "version": {
    "number": "8.0.0",
    "build_flavor": "default",
    "build_type": "docker",
    "build_hash": "1b6a7ece17463df5ff54a3e1302d825889aa1161",
    "build_date": "2022-02-03T16:47:57.507843096Z",
    "build_snapshot": false,
    "lucene_version": "9.0.0",
    "minimum_wire_compatibility_version": "7.17.0",
    "minimum_index_compatibility_version": "7.0.0"
  },
  "tagline": "You Know, for Search"
}

but when I try to connect in the settings

server: localhost
port: 9200

There is the toast saying: Error: An unknown error occurred. Check Console.

and in the console there is:

Elasticsearch client not initialized. Restart Trudesk!

and no matter what I try - nothing works …

any idea what am I doing wrong?