[Samba] error samba_dnsupdate

[sandy.napoles at eccmg.cupet.cu]

Hello list, update my version of samba to 4.10.2 and when I send the command ./samba_dnsupdate --verbose I get the following error

Traceback (most recent call last):
 File "./samba_dnsupdate", line 56, in <module>
 import dns.resolver
ImportError: No module named 'dns'

Somebody can Help me