iOS 13.2 message: nehelper sent invalid result code [1] for Wi-Fi information request

Check out WWDC 19 session 713, It happenes because in iOS13 in order to get WiFi details you should allow location permission, each time you try to pull CNCopyCurrentNetworkInfo data from CNCopySupportedInterfaces array you will get this log.

silly solution may be to try to enable location permission and you will not get this error anymore

It eventually turned out, that a third party framework that my app uses, launches those calls to CNCopyCurrentNetworkInfo.

After I added WiFi access capabilities as described here to the app itself the error message disappeared