iphone - iphone sdk中的错误网址

Question

网址http://crescerance.com/School/isummit/speakers.html

Isummit[12923:1d013] 错误域=NSURLErrorDomain 代码=-1000“错误 URL”UserInfo=0x91aa490 {NSUnderlyingError=0x91aa1d0“错误 URL”，NSLocalizedDescription=错误 URL}