KeyError: 'domainName' when in fact Authentication Error

[JoelGotsch]

I tried the setup proposed in #5
and ran into:

Hook '--manual-cleanup-hook' for ai-fitness.coach reported error code 1
Hook '--manual-cleanup-hook' for ai-fitness.coach ran with error output:
 Traceback (most recent call last):
   File "/root/certbot-dns-name-com/src/certbot-dns-namecom.py", line 87, in <module>
     base_domain = ncd.get_base_domain()
   File "/root/certbot-dns-name-com/src/certbot-dns-namecom.py", line 26, in get_base_domain
     return r.json()['domainName']
 KeyError: 'domainName'
Some challenges have failed.

This happened, because I had Two-factor Authentication activated.

If you read this and have the same problem, it can be fixed via "Security Settings" in name.com -> "NAME.COM API ACCESS"