I have been facing unknown error starting from couple of days ago when I am trying to build my Xamarin.iOS.
I am using VS 2017 v 15.5.5 and Mac machine has Xcode 9.2. My application is using net standard 2.0.1, Ef Core 2.0.1 .
My approach to solve the problem which didn't:
Remove bin, debug and cache from Mac. New Xamarin.iOS project
Error:
Error /Users/~/Library/Caches/Xamarin/mtbs/builds/~: unknown error -1=ffffffffffffffff C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets 1868
When I downgraded XCode on Mac to 9.1, building worked fine! So what is it I am missing or what is the problem with XCode 9.2?