Removing invalid block: unrecognized directive: Did you mean to define a second site? If so, you must use curly braces around each site to separate their configurations.

[ADV1K]

[ERROR]  Removing invalid block: Caddyfile:47: unrecognized directive: whoami.local
Did you mean to define a second site? If so, you must use curly braces around each site to separate their configurations.
whoami.local {
        reverse_proxy 172.27.0.11:8080
}

compose.yaml

services:
  whoami:
    image: traefik/whoami
    container_name: whoami
    networks:
      - internal
    labels:
      caddy: whoami.local
      caddy.reverse_proxy: "{{upstreams 8080}}"

  caddy:
    image: lucaslorentz/caddy-docker-proxy:ci-alpine
    container_name: caddy
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - caddy-data:/data
    networks:
      - internal

volumes:
  caddy-data:
    external: true

networks:
  internal:
    external: true

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this seems to happen when i have too many containers running apparently.