iOS集成客服系统后出现闪退

我按照最新的Demo集成了环信IM SDK和客服SDK，程序运行起来后，出现了闪退，控制台显示的日志如下：
 
2017-10-10 11:45:02.470372+0800 Bmgj[30199:226923] Could not successfully update network info during initialization.

[2017/10/10 11:45:02:518]: =============EMChatClientImpl::init()==================

[2017/10/10 11:45:02:519]: dns config mode is 1

[2017/10/10 11:45:02:519]: EMConfigManager::init()

[2017/10/10 11:45:02:519]: No config file, do nothing

[2017/10/10 11:45:02:520]: addConnectionListener

[2017/10/10 11:45:02:520]: addConnectionListener

[2017/10/10 11:45:02:520]: addConnectionListener

[2017/10/10 11:45:02:520]: addConnectionListener

[2017/10/10 11:45:02:520]: registerContactListener

[2017/10/10 11:45:02:521]: onNetworkChanged(): 2
出现闪退的地方，感觉是出现了循环问题