ValueError: nameserver [Not Set] is not an IP address or valid https URL

I have bellow error in mailinabox v57a, the system status check page dose’nt open and show “Something went wrong, sorry.” the error that showed with sudo ./ as follow:
File “/usr/local/lib/mailinabox/env/lib/python3.6/site-packages/dns/”, line 982, in nameservers
raise NotImplementedError
please guide me.

Please share how you are hosting MiaB, how you installed MiaB, the networking environment, and if this installation was previously working as expected.