Got an error

[Kousei-Friend-A]

I tried ur old source code.. but when I ran python3 narrowvine.py, I got this error.. plz help me to fix this..

Traceback (most recent call last):
File "narrowvine.py", line 25, in
import license_protocol_pb2
File "/root/narrowvine/license_protocol_pb2.py", line 20, in
create_key=_descriptor._internal_create_key,
AttributeError: module 'google.protobuf.descriptor' has no attribute '_internal_create_key'