Can't setup SNM (Mails server)

I have a problem. I can’t rebuild after setup the SNM in my config.
Everthing is fine, exept when I add the following line:

certificateScheme = 3;

I can’t rebuild with the error:

error: A definition for option '' is non of type 'string'. Definition values- In '/nix/var/nix/profiles/per-user/root/channels/nixos/nixos/modules/security/acme': null

What does it mean an how do I fix this?


Let’s Encrypt requires an email to set up an account. I have the following in my config.

security.acme.acceptTerms = true; = "";

well yes that’s right. I am blind. sorry for that waste of time :smiley: