objective-c - ios development, integrating Alipay, after appdelegate gets the payment result, the program crashes, please help me

Question

这个是crash之后的log
2017-03-09 19:06:47.812890 rabbitvr[43373:11119048] XPC connection interrupted
2017-03-09 19:06:49.360696 rabbitvr[43373:11118924] void SendDelegateMessage(NSInvocation *): delegate (webView:decidePolicyForNavigationAction:request:frame:decisionListener:) failed to return after waiting 10 seconds. main run loop mode: kCFRunLoopDefaultMode