help needed: traefik won't be published because of error in tls-opt

[Smeeth]

Error message:

level=error msg="unknown TLS options: tls-opts@file" entryPointName=websecure routerName=traefik-rtr@docker

But I followed the guide word by word

[Smeeth]

my fault: I stored tls-opt in docker/appdata/traefik/rules and not in docker/traefik/rules/$hostname