am getting the error below, anyone have any idea to solve this

[ghost]

Namespace(port=445, silver=True, target='server-dc1', target_da='administrator', target_machine='server-dc1')
Performing authentication attempts...
server-dc1
SERVER-DC1
========================================================
Success! DC can be fully compromised by a Zerologon attack.

Traceback (most recent call last):
  File "zer0dump.py", line 163, in <module>
    perform_attack(options)
  File "zer0dump.py", line 93, in perform_attack
    blah = nrpc.hNetrServerPasswordSet2(
AttributeError: module 'impacket.dcerpc.v5.nrpc' has no attribute 'hNetrServerPasswordSet2'