Can not create LetsEncrypt certificate - error with agreement URL

Hi, I just set up a new server with VirtualMin and try to secure subdomains with SSLCertificate. I can not create a cert because it says "agreement URL does not match". What is here wrong?

**** LOG ****

Parsing account key... Parsing CSR... Registering account... Traceback (most recent call last): File "/usr/libexec/webmin/webmin/acme_tiny.py", line 235, in main(sys.argv[1:]) File "/usr/libexec/webmin/webmin/acme_tiny.py", line 231, in main signed_crt = get_crt(args.account_key, args.csr, args.acme_dir, args.dns_hook, args.cleanup_hook, log=LOGGER, CA=args.ca) File "/usr/libexec/webmin/webmin/acme_tiny.py", line 106, in get_crt raise ValueError("Error registering: {0} {1}".format(code, result)) ValueError: Error registering: 400 { "type": "urn:acme:error:malformed", "detail": "Provided agreement URL [https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf] does not match current agreement URL [https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf]", "status": 400 }