Troubles importing datas when target model has many to many field about django-data-wizard HOT 1 CLOSED

from rest_framework import serializers
import data_wizard
from .models import Asset, IP

class AssetIPSerializer(serializers.Serializer):
    name = serializers.CharField()
    fqdn = serializers.CharField()
    ip_address = serializers.IPAddressField()

    def create(self, validated_data):
        asset, is_new = Asset.objects.get_or_create(
            hostname=validated_data['name'],
            defaults={ 'fqdn': validated_data['fqdn']}
        )
        ip_addr, is_new = IP.objects.get_or_create(
            address=validated_data['ip_address'],
            defaults={'version': '?'},
        )
        asset.ip_list.add(ip_addr)

data_wizard.register("Asset + IP", AssetIPSerializer)