任何遇到此问题或知道如何解决此问题的人？
我有一个Xamarin表单项目。我可以在iPhoneSimulator中构建和运行，但是当我尝试进行发布构建时，我得到： 错误：意外错误，System.NullReferenceException：
我正在使用Visual Studio 2017，并远程使用MacInTheCloud进行构建
打开诊断日志级别后，请参阅下面的日志输出：
Detected signing identity:
2> Code Signing Key: "XXXXXXXXXXX" (XXXXXXXXXXXXXXXXXXXX)
2> Provisioning Profile: "InfogenDevProfile" (XXXXXXXXXXXXXXXXXXXXXXXXXX)
2> Bundle Id: XXXXXXXXXXXXXXXXXXXXXXXXXXXX
2> App Id: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
2>C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(747,3): error : Unexpected error - Please file a bug report at http://bugzilla.xamarin.com
2> System.NullReferenceException: Object reference not set to an instance of an object
2> at MonoTouch.Tuner.Linker.Process (MonoTouch.Tuner.LinkerOptions options, MonoTouch.Tuner.MonoTouchLinkContext& context, System.Collections.Generic.List'1[Mono.Cecil.AssemblyDefinition]& assemblies) [0x00145] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Tuning.cs:94
2> at Xamarin.Bundler.Target.LinkAssemblies (System.Collections.Generic.List'1[Mono.Cecil.AssemblyDefinition]& assemblies, System.String output_dir, System.Collections.Generic.IEnumerable'1[T] sharedCodeTargets) [0x0029a] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Target.cs:491
2> at Xamarin.Bundler.Target.ManagedLink () [0x005c5] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Target.cs:614
2> at Xamarin.Bundler.Target.ProcessAssemblies () [0x000bb] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Target.cs:800
2> at Xamarin.Bundler.Application.ProcessAssemblies () [0x0002f] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Application.cs:1396
2> at Xamarin.Bundler.Application.BuildManaged () [0x00001] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Application.cs:827
2> at Xamarin.Bundler.Application+<>c.<BuildAll>b__134_1 (Xamarin.Bundler.Application v) [0x00000] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Application.cs:775
2> at System.Collections.Generic.List'1[T].ForEach (System.Action'1[T] action) [0x00024] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
2> at Xamarin.Bundler.Application.BuildAll () [0x00050] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/Application.cs:775
2> at Xamarin.Bundler.Driver.Main2 (System.String[] args) [0x00481] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/mtouch.cs:1420
2> at Xamarin.Bundler.Driver.Main (System.String[] args) [0x0000f] in /Users/builder/data/lanes/4991/bf350ba5/source/xamarin-macios/tools/mtouch/mtouch.cs:945