Censys fails on some domains

[mastercho]

[*]PROCESS: Enumerating historical data from: 24ins.bg using Censys.io
   [!]WARNING: Total IPs found using certificates with common names:
      [!]WARNING: Something has gone wrong. Retrying connection
      [-]ERROR: [Errno -9] Address family for hostname not supported
Traceback (most recent call last):
  File "/home/ubuntu/Cloudmare/Cloudmare.py", line 65, in <module>
    subdomain.extend(CensysIP)
TypeError: 'NoneType' object is not iterable

Censys fails with error of Cloudmare for some domains(mostly if contains numbers) when i search domain manually in Censys all is fine, i think something is wrongly parsed from API in Cloudmare