-[EMClient callManager]: unrecognized selector sent to instance 0x6040001a9f40 问题,求大佬们解决!!!!!

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[EMClient callManager]: unrecognized selector sent to instance 0x6040001a9f40'
运行到显示开屏画面就报错了!!!!!!!!!!!!!!!!!!
报上述错误.菜鸟一枚,求大神指导...