httpChallenge does not work, storage file stays empty

I can't get any cert from let's encrypt, the storage file gets created but stays empty

traefik.yml:

log:
  level: DEBUG

entryPoints:
  web:
    address: ":80"
  web-secure:
    address: ":443"

certificatesResolvers:
  default:
    acme:
      email: me@mydomain.com
      storage: /etc/traefik/acme.json
      httpChallenge:
        entryPoint: web

providers:
  file:
    filename: /etc/traefik/http.yml

http.yml:

http:
  routers:
    to-gogs:
      rule: "Host(`gogs.mydomain.com`)"
      service: gogs
      tls:
        certResolver: default
  services:
    gogs:
      loadBalancer:
        servers:
        - url: http://server.me.com:30300

Is there an option to get the acme log output?

Hello,

Could you provide the logs?