on watchtower

`lnd --wtclient.active` (advised by https://lightningnetwork.plus/watchtower) wants to tell me something about letsencrypt and I should create some directory for it… which makes about no sense for a node running as onion service.
so I followed https://github.com/openoms/lightning-node-management/blob/220715e42fe7dcc16f86c881cbd2aeb90bcdbb01/advanced-tools/watchtower.md and simply edited the lnd.conf for enabling the wtclient and this worked for me.
I don't think my case is so special, maybe that helps others.