Received an error failed to return after waiting 10 seconds. main run loop mode: kCFRunLoopDefaultMode

When I ran iOS application in iOS simulator and navigate there is an PDF view, and while loading that PDF it gives below exception in console

void SendDelegateMessage(NSInvocation *): delegate (webView:decidePolicyForNavigationAction:request:frame:decisionListener:) failed to return after waiting 10 seconds. main run loop mode: kCFRunLoopDefaultMode

Thanks in advance!