Unable to create Hotspot connection using NEHotspotConfigurationManager

Question

when I try to create a hotspot connection in my Xamarin.IOS project I get the following error returned in the description when using NEHotspotConfigurationManager :

Error Domain=NEHotspotConfigurationErrorDomain Code=8 "internal error." UserInfo={NSLocalizedDescription=internal error.}

I have tried to connect to both the network in the office and my phone's wifi hotspot and both return the same message. I have enabled both the options "Accept WiFi Information" and "Hotspot" on both the App ID on the developer portal and also the same in the Entitlements.plist and still the same error. I'm using the code shown below.

public async void JoinNetwork()
{
NEHotspotConfiguration config = new NEHotspotConfiguration("CTIP");
config.JoinOnce = false;
var tcs = new TaskCompletionSource<NSError>();
NEHotspotConfigurationManager.SharedManager.ApplyConfiguration(config, err => tcs.SetResult(err));
var error = await tcs.Task;
if (error != null)
{
PAGE.IOSErrorAlert(error.Description, this);
return;
}
}