Attempt to fix error

docker-compose.override.yml

  backend:
    depends_on:
      - db
    ports:
      - '8888:8888'
    volumes:
      - ./backend/app:/app
    environment:
      - JUPYTER=jupyter lab --ip=0.0.0.0 --allow-root --NotebookApp.custom_display_url=http://127.0.0.1:8888
      - SERVER_HOST=http://${DOMAIN?Variable not set}
    build:
      context: ./backend
      dockerfile: backend.dockerfile
      args:
        INSTALL_DEV: ${INSTALL_DEV-true}
        INSTALL_JUPYTER: ${INSTALL_JUPYTER-true}
    # command: bash -c "while true; do sleep 1; done"  # Infinite loop to keep container live doing nothing
    command: /start-reload.sh
    labels:
      # 0. Attach to the `proxy` service
      - traefik.enable=true
      - traefik.constraint-label-stack=${TRAEFIK_TAG?Variable not set}
      # 1. Create a router for FastAPI paths (naming it STACK_NAME-backend-http)
      - traefik.http.routers.${STACK_NAME?Variable not set}-backend-http.rule=PathPrefix(`${API_PATH_PREFIX?Variable not set}`) || PathPrefix(`${API_DOCS_PATH_PREFIX?Variable not set}`)
      # 2. Attach the router to FastAPI service (naming it STACK_NAME-backend)
      - traefik.http.routers.${STACK_NAME?Variable not set}-backend-http.service=${STACK_NAME?Variable not set}-backend
      # 3. Attach the router to port 80 of the FastAPI service (the one named STACK_NAME-backend)
      - traefik.http.services.${STACK_NAME?Variable not set}-backend.loadbalancer.server.port=80
      # Repeat the 3 steps above for Airflow path
      # (naming the router STACK_NAME-airflow-http and the service STACK_NAME-airflow)
      - traefik.http.routers.${STACK_NAME?Variable not set}-airflow-http.rule=PathPrefix(`/airflow`)
      - traefik.http.routers.${STACK_NAME?Variable not set}-airflow-http.service=${STACK_NAME?Variable not set}-airflow
      - traefik.http.services.${STACK_NAME?Variable not set}-airflow.loadbalancer.server.port=8080