[ANNOUNCE] node-red-contrib-letsencrypt : beta version

Still having problems I'm afraid. When I request a certificate, I get;

acmeerror

and in the node-red log;

21 May 08:56:02 - [info] [aedes broker:41b47ed.32a568] Binding aedes mqtt server on port: 1883
21 May 08:56:02 - [info] Server now running at http://127.0.0.1:2086/
21 May 08:56:02 - [info] [mqtt-broker:9e0fbc51.f0a3e] Connected to broker: mqtt://140.238.65.67:1883
21 May 08:56:11 - [warn] [acme-client:Certificate Management] Acme warning message = dns-01 challenge's `propagationDelay` not set, defaulting to 5000ms status =
21 May 08:56:12 - [error] [acme-client:Certificate Management] Error in CREATE_CERTIFICATE : Error: HTTPError: Response code 400 (Bad Request)

It's worth pointing out that I don't already have any certificates in my server. Do I need to create dummy ones?

The domain being used is a sub domain.