Getting 404 for Docker Swarm + Traefik v2

I've tried ask question on this forum last time but couldn't get any help. This led me to scrap everything and to start from beginning again.

I am writing a new compose file with traefik.yaml with very simple setting. Unfortunately Traefik isn't routing any request correctly and just showing default 404 pages. I wish I could get at least a some sort of log, but it doesn't even yield any logs. I am literally plucking my hair out.

# traefik.yaml
providers:
  docker:
    # endpoint: "tcp://127.0.0.1:2375"
    endpoint: "unix:///var/run/docker.sock"
    swarmMode: true
    network: test-app_web-internal

api:
  dashboard: true # must access it via url:${HOSTNAME}/dashboard/
  # insecure: true # only for dev mode
  debug: true
log:
  level: DEBUG

entryPoints:
  web:
    address: ":80"
  web-secure:
    address: ":443"
# docker-compose.yaml
version: '3.7'
services:
  proxy-traefik:
    image: traefik:latest
    volumes:
      - "./traefik/traefik.dev.yaml:/etc/traefik.yaml"
      - "/var/run/docker.sock:/var/run/docker.sock"
    ports:
      - "80:80"
      - "433:433"
      - "8080:8080" # dashboard
    deploy: # specify configuration for services(not container)
      labels: 
        - traefik.http.routers.proxy-traefik.rule=Host('traefik.127.0.0.1.xip.io')
        - traefik.http.services.proxy-traefik.loadbalancer.server.port=8080
        - traefik.docker.network=web-internal
      placement:
        constraints:
          - node.role == manager
        preferences:
          - spread: node.id
    networks:
      - web-internal

  front:
    image: test-app-dev_front:latest
    ports: # FOR DEBUG PURPOSE - must be disabled in PROD
      - "3000:3000"
    deploy:
      labels:
        - traefik.http.routers.web-traefik.rule=Host('127.0.0.1.xip.io')
        - traefik.http.routers.web-traefik.entrypoints=web # open to :80,443
        - traefik.http.services.web-traefik.loadbalancer.server.port=3000
        - traefik.docker.network=web-internal
        - traefik.enable=true
    volumes:
      - "./frontend/src:/node/myapp/src"
      - "./frontend/public:/node/myapp/public"
    networks:
      - web-internal

networks:
  web-internal:
    name: web-internal
    driver: overlay # allows contact different nodes
    # attachable: true # outside container can be attached to this network
volumes:
  front-node_modules:

Hello,

you have to use back-ticks instead of single quote in the rule definition:

traefik.http.routers.proxy-traefik.rule=Host(`traefik.127.0.0.1.xip.io`)