I found a problem on product evn, here is error log , anyone can help?

[Tonyvalony]

I found a problem on product evn, here is error log , anyone can help?

code = -1004 desc = Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={NSErrorFailingURLKey=http://localhost:49786/index.html?...., _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <A2E88C08-0CF7-462D-8EB9-D6F960983E65>.<16>, _kCFStreamErrorCodeKey=61, NSLocalizedDescription=Could not connect to the server., _WKRecoveryAttempterErrorKey=<WKReloadFrameErrorRecoveryAttempter: 0x2822d7560>, networkTaskDescription=LocalDataTask <A2E88C08-0CF7-462D-8EB9-D6F960983E65>.<16>, _kCFStreamErrorDomainKey=1, NSErrorFailingURLStringKey=http://localhost:49786/index.html?...., NSUnderlyingError=0x282c26010 {Error Domain=kCFErrorDomainCFNetwork Code=-1004 "(null)" UserInfo={_kCFStreamErrorCodeKey=61, _kCFStreamErrorDomainKey=1}}}

Originally posted by @free1990 in robbiehanson/CocoaHTTPServer#204

[Tonyvalony]

NIC