Error in deploying Mailtrain with docker compose

Hello, the following is my docker-compose.yml. I pasted in here the content of docker-compose.override.yml
Once I visit https://mailtrain.tommi.space, I get 404 page not found (see screenshot at the bottom). Where is my error (Traefik is up and running correctly, I have other containers which use it and they are ok).
Note : I get the same error message also when visiting http://mailtrain.tommi.space . Nevertheless, when I visit http://my.ip.address:3000 I see everything! It probably is a Traefik configuration error specifically in this docker compose file.

version: '2'
services:
  mysql:
    image: mysql:5.7
    environment:
      - MYSQL_ROOT_PASSWORD=mailtrain
      - MYSQL_DATABASE=mailtrain
      - MYSQL_USER=mailtrain
      - MYSQL_PASSWORD=mailtrain
    volumes:
      - mailtrain-mysq-data:/var/lib/mysql
    restart: always
  redis:
    image: redis:3.0
    volumes:
      - mailtrain-redis-data:/data
    restart: always
  mailtrain:
    build: ./
    image: mailtrain:latest
    container_name: mailtrain
    hostname: mailtrain
    depends_on:
      - mysql
      - redis
    volumes:
      - mailtrain-node-config:/app/config
      - mailtrain-node-data:/app/public/grapejs/uploads
      - mailtrain-node-data:/app/public/mosaico/uploads
      - mailtrain-node-reports:/app/protected/reports
    ports:
      - "3000:3000"
    restart: always
    labels:
      - "traefik.enable=true"
      - "traefik.mailtrain-trusted.backend=mailtrain-trusted"
      - "traefik.mailtrain-trusted.frontend.rule=Host:mailtrain.tommi.space"
      - "traefik.mailtrain-trusted.frontend.headers.SSLRedirect=true"
      - "traefik.mailtrain-trusted.port=3000"
      - "traefik.mailtrain-trusted.protocol=http"
volumes:
  mailtrain-mysq-data: {}
  mailtrain-redis-data: {}
  mailtrain-node-data: {}
  mailtrain-node-config: {}
  mailtrain-node-reports: {}

The error message:

Thank y'all very much in advance!