objective-c - ios开发,集成支付宝, 在appdelegate拿到支付结果后,程序crash了, 求大神

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