Ошибка атрибута во вложенном Serilizer

Question

Я пытаюсь заполнить четыре модели в одном запросе Post с помощью Django Rest, где я получаю ошибку атрибута при возврате serializer.data.

Serializer.py

class TechnicianBasedTicketCreation(serializers.ModelSerializer):
    technician_name = PrimaryKeyRelatedField(queryset=Technician.objects.all(), default=None)
    ticket_timeslot_details = TicketTimeSlotSerializer(write_only=True)
    service=TicketServiceSerializer(write_only=True)

    class Meta:
        model = Ticket
        fields = ('technician_name','ticket_timeslot_details','service','ticket_type','latitude','longitude','address', )

    def get_fields(self, *args, **kwargs):
        fields = super(TechnicianBasedTicketCreation, self).get_fields()
        qs = User.objects.filter(usertype__usertype='Technician',is_active=True)
        fields['technician_name'].queryset = qs
        return fields

    def create(self, validated_data):
        technician_name = validated_data.pop('technician_name')
        service_obj = validated_data.pop('service')
        time_slot_obj = validated_data.pop('ticket_timeslot_details')
        pdb.set_trace()
        ticket_created=Ticket.objects.create(ticket_type=validated_data['ticket_type'],latitude=validated_data['latitude'],longitude=validated_data['longitude'],address=validated_data['address'],current_status=TicketStatus.objects.get(status="Assigned"))
        return ticket_created

Views.py

class TechnicianSelectTicketGeneration(APIView):    
    """
    """
    permission_classes = (permissions.IsAuthenticated, HasViewPermission)
    required_scopes = ['groups']
    serializer_class = TechnicianBasedTicketCreation

    def post(self, request,*args, **kwargs):        
        serializer = self.serializer_class(data=request.data)
        if serializer.is_valid():
            serializer.save()
            print(serializer.data)
            return Response(serializer.data)

Я получаю сообщение об ошибке ниже, но мне нужно вернуть ответ данных сериализатора.

AttributeError в /api/v1/ticket/technician/ генерации билетов / объект 'Ticket' не имеет атрибута 'technician_name'

Мои модели

class Ticket(models.Model):
        ticket_type=models.ForeignKey(TicketType, related_name='ticket_type',on_delete=models.CASCADE)
        latitude=models.FloatField()
        longitude=models.FloatField()
        address=JSONField()
        created_at =models.DateTimeField(default=timezone.now,null=True,blank=True)
        is_deleted=models.BooleanField(default=False)
        current_status=models.ForeignKey(TicketStatus,related_name='current_ticket_status',on_delete=models.CASCADE)

        def __str__(self):
            return u'%s' % (self.id)

class CurrentTicketStatus(models.Model):        
    ticket =models.ForeignKey(Ticket,on_delete=models.CASCADE,related_name='ticket_status_details')
    ticket_status= models.ForeignKey(TicketStatus,on_delete=models.CASCADE)
    user = models.ForeignKey(User,on_delete=models.CASCADE)
    created_at=models.DateTimeField(default=timezone.now,null=True,blank=True)

    def __str__(self):
        return u'%s' % (self.id)


class TicketService(models.Model):
    ticket = models.ForeignKey(Ticket,on_delete=models.CASCADE,related_name='ticket_service_details')
    service=models.ForeignKey(Service,on_delete=models.CASCADE, related_name='ticket_service')
    subservice=models.ForeignKey(SubService,on_delete=models.CASCADE, related_name='ticket_subservice')
    issue_description=models.TextField()
    booked_date=models.DateField(default=timezone.now,null=True,blank=True)


The PrimarykeyField Model is

class Technician(models.Model):     
    user = models.OneToOneField(User,on_delete=models.CASCADE,related_name='technician_user')
    vehicle=models.CharField(blank=True,null=True,max_length=150)
    vehicle_no=models.CharField(blank=True,null=True,max_length=50)
    license_no=models.CharField(blank=True,null=True,max_length=150)

    def __str__(self):
        return u'%s' % (self.id)

Пожалуйста, дайте мне знать, что я делаю не так.

Заранее спасибо.