Traceback (most recent call last):
  File "/usr/libexec/webmin/webmin/acme_tiny.py", line 198, in <module>
    main(sys.argv[1:])
  File "/usr/libexec/webmin/webmin/acme_tiny.py", line 194, in main
    signed_crt = get_crt(args.account_key, args.csr, args.acme_dir, log=LOGGER, CA=args.ca, disable_check=args.disable_check, directory_url=args.directory_url, contact=args.contact)
  File "/usr/libexec/webmin/webmin/acme_tiny.py", line 143, in get_crt
    raise ValueError("Wrote file to {0}, but couldn't download {1}: {2}".format(wellknown_path, wellknown_url, e))
ValueError: Wrote file to /home/[mydomain]/public_html/.well-known/acme-challenge/nmEBLmegVkw5LajjH9POWvMDzesQqVXddu-TU1OuM0w, but couldn't download http://[mydomain].com/.well-known/acme-challenge/nmEBLmegVkw5LajjH9POWvMDzesQqVXddu-TU1OuM0w: Error:
Url: http://[mydomain].com/.well-known/acme-challenge/nmEBLmegVkw5LajjH9POWvMDzesQqVXddu-TU1OuM0w
Data: None
Response Code: None
Response: <urlopen error [Errno -2] Name or service not known>