sync contacts Unsuccessful, no result returned

[xkjdiao]

Syncing a contact returns no results, and the person is not visible from the contact side, synchronization fails, if you can't sync the contact, then there is no point in sending this library.
Who can help me solve this problem?

stack.py
`import time

from yowsup.stacks import YowStackBuilder
from layer import SyncLayer
from stack import YowsupSyncStack
from yowsup.layers import YowLayerEvent
from yowsup.layers.network import YowNetworkLayer
from yowsup.profile.profile import YowProfile
import sys

from yowsup.layers import YowParallelLayer
from yowsup.layers.auth import YowAuthenticationProtocolLayer
from yowsup.layers.protocol_messages import YowMessagesProtocolLayer
from yowsup.layers.protocol_receipts import YowReceiptProtocolLayer
from yowsup.layers.protocol_acks import YowAckProtocolLayer
from yowsup.layers.network import YowNetworkLayer
from yowsup.layers.coder import YowCoderLayer
from yowsup.layers.protocol_presence import YowPresenceProtocolLayer
from yowsup.stacks import YowStack
from yowsup.common import YowConstants
from yowsup.layers import YowLayerEvent
from yowsup.stacks import YowStack, YOWSUP_CORE_LAYERS
from yowsup.layers.axolotl import AxolotlControlLayer, AxolotlSendLayer, AxolotlReceivelayer
from yowsup.env import YowsupEnv
from yowsup.layers.auth import YowAuthenticationProtocolLayer

import sys,logging,threading

from yowsup import logger as yowlogger, formatter
logger = logging.getLogger('yowsup-cli')
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)

# add formatter to ch

ch.setFormatter(formatter)

# add ch to logger

logger.addHandler(ch)

def add_contacts(phone):
username = '6285867178214'
logger.setLevel(logging.DEBUG)
yowlogger.setLevel(level=logging.DEBUG)

stackBuilder = YowStackBuilder()
PROP_MESSAGES = "org.openwhatsapp.yowsup.prop.sendclient.queue"
stack = stackBuilder \
    .pushDefaultLayers() \
    .push(SyncLayer) \
    .build()
stack.setProp(SyncLayer.PROP_CONTACTS, phone)
stack.setProp(YowAuthenticationProtocolLayer.PROP_PASSIVE, True)
stack.setProfile(YowProfile(username))
stack.broadcastEvent(YowLayerEvent(YowNetworkLayer.EVENT_STATE_CONNECT))
stack.loop()

if name== "main":

contacts=[
    '6282116336279','6285198354865','6285475421'
]

add_contacts(contacts)

`

layer.py
`from yowsup.layers.interface import YowInterfaceLayer, ProtocolEntityCallback
from yowsup.layers.protocol_contacts.protocolentities import GetSyncIqProtocolEntity, ResultSyncIqProtocolEntity
from yowsup.layers.protocol_iq.protocolentities import ErrorIqProtocolEntity
import threading
import logging
logger = logging.getLogger(name)

class SyncLayer(YowInterfaceLayer):

PROP_CONTACTS = "org.openwhatsapp.yowsup.prop.syncdemo.contacts"

def __init__(self):
    super(SyncLayer, self).__init__()

@ProtocolEntityCallback("success")
def onSuccess(self, successProtocolEntity):
    contacts= self.getProp(self.__class__.PROP_CONTACTS, [])

    contactEntity = GetSyncIqProtocolEntity(contacts)
    self._sendIq(contactEntity, self.onGetSyncResult, self.onGetSyncError)

def onGetSyncResult(self, resultSyncIqProtocolEntity, originalIqProtocolEntity):
    print(resultSyncIqProtocolEntity)
    raise KeyboardInterrupt()

def onGetSyncError(self, errorSyncIqProtocolEntity, originalIqProtocolEntity):
    print(errorSyncIqProtocolEntity)
    raise KeyboardInterrupt()




@ProtocolEntityCallback("iq")
def onSyncSuccess(self, success_iq_protocol_entity):
    if success_iq_protocol_entity.getType() == "result":
        print("Sync successful!")
    else:
        print("Unknown success type")

def onSyncError(self, error_iq_protocol_entity):
    print("Sync error: {}".format(error_iq_protocol_entity))

def onIqError(self, error_iq_protocol_entity):
    if isinstance(error_iq_protocol_entity,ErrorIqProtocolEntity):
        print("Sync error: {}".format(error_iq_protocol_entity))`