XamarinAndroid中的“VerifyTaskFailed”任务意外失败

更新nuget软件包后，Xamarin Android出现此错误。任何方式都可以解决这个问题。

/Users/hmspl/Documents/GitHub/xamarin/packages/Xamarin.Android.Support.Annotations.28.0.0.2/build/monoandroid90/Xamarin.Android.Support.Annotations.targets(9,9）：错误MSB4018：“ VerifyVersionsTask任务意外失败。System.TypeInitializationException：“ Xamarin.Android.Support.BuildTasks.NugetPackages”的类型初始值设定项引发了异常。---> System.ArgumentException：已经添加了具有相同键的项。关键字：System.Collections.Generic.Dictionary上的282[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) [0x002b5] in /Users/builder/jenkins/workspace/build-package-osx-mono/2019-02/external/bockbuild/builds/mono-x64/external/corefx/src/Common/src/CoreLib/System/Collections/Generic/Dictionary.cs:677 at System.Collections.Generic.Dictionary2 [TKey，TValue]。在/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / mono-x64 /中添加（TKey键，TValue值）[0x00000]外部/corefx/src/Common/src/CoreLib/System/Collections/Generic/Dictionary.cs:240 at Xamarin.Android.Support.BuildTasks.NugetPackages..cctor（）在[0x0006b]中-内部结束异常堆栈跟踪---在Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）在0的Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）在[0x0009d]在[0x00023] /Users/builder/jenkins/workspace/build-package-osx-mono/2019-02/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:573在Microsoft.Build.BackEnd .TaskBuilder.ExecuteInstantiatedTask（Microsoft.Build.BackEnd。ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket存储桶，Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9]在/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / Components / RequestBuilder / TaskBuilder.cs：810在Xamarin.Android.Support.BuildTasks。 Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）在0中的VerifyVersionsTask.Execute（）[0x0009d] [0x00023]在/ Users / builder / jenkins / workspace / build-package-osx-中在Microsoft.Build.BackEnd.TaskBuilder上的mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / TaskExecutionHost / TaskExecutionHost.cs：573。ExecuteInstantiatedTask（Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket存储桶，Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[ 0x002a9]在/Users/builder/jenkins/workspace/build-package-osx-mono/2019-02/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:810中Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）在Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）中在0的[0x0009d]在[/ users / builder / jenkins /工作区/构建包osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / TaskExecutionHost / TaskExecutionHost。cs：573 at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask（Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket桶，/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build /中的Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9] Backend / Components / RequestBuilder / TaskBuilder.cs：Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）在0处位于Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost。在/Users/builder/jenkins/workspace/build-package-osx-mono/2019-02/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs中执行（）[0x00023]：在Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask（Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket存储桶， / Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / Backend /中的Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9]组件/RequestBuilder/TaskBuilder.cs:810（位于Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）[0x0009d]，位于Microsoft.Build.BackEnd：：0）。/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src /中的TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）[0x00023] Build / BackEnd / TaskExecutionHost / TaskExecutionHost.cs：573在Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask（Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost ，/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds /中的Microsoft.Build.BackEnd.ItemBucket存储区，Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9]在Xamarin.Android.Support.BuildTasks.VerifyVersionsTask上的msbuild-15 / src / Build / BackEnd / Components / RequestBuilder / TaskBuilder.cs：810。在/ Users / builder / jenkins / workspace / build-package-osx-mono /中的Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）在：0中执行（）[0x0009d] 2019年2月/外部/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:573在Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask（Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build / Users / builder / jenkins / workspace / build-中的.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket存储桶，Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9]软件包osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / Components / RequestBuilder / TaskBuilder.cs：Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）中的810在Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）在：0中的/ Users / builder /中的[0x00023] jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / TaskExecutionHost / TaskExecutionHost.cs：573在Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask（ Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket存储桶，Microsoft.Build.BackEnd。/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / Components / RequestBuilder / TaskBuilder中的TaskExecutionMode howToExecuteTask）[0x002a9]。 cs：810在Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）在Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute（）在：0的[0x0009d]在/ Users /中在Microsoft.Build.BackEnd.TaskBuilder上的builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src / Build / BackEnd / TaskExecutionHost / TaskExecutionHost.cs：573。 ExecuteInstantiatedTask（Microsoft.Build.BackEnd.ITaskExecutionHost taskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft.Build.BackEnd.TaskHost taskHost，Microsoft.Build。/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 / external / bockbuild / builds / msbuild-15 / src中的BackEnd.ItemBucket存储桶，Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9] /Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:810（位于Xamarin.Android.Support.BuildTasks.VerifyVersionsTask.Execute（）[0x0009d]，位于Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost的：0中）在/Users/builder/jenkins/workspace/build-package-osx-mono/2019-02/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs中执行（）[0x00023] Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask上的：573（Microsoft.Build.BackEnd.ITaskExecutionHost taskTaskExecutionHost，Microsoft.Build.BackEnd.Logging.TaskLoggingContext taskLoggingContext，Microsoft。Build.BackEnd.TaskHost taskHost，Microsoft.Build.BackEnd.ItemBucket存储桶，Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask）[0x002a9]在/ Users / builder / jenkins / workspace / build-package-osx-mono / 2019-02 /外部/bockbuild/builds/msbuild-15/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:810（MSB4018）（MMHRC.Droid）

logeshpalani.. 8

将软件包版本28.0.0.2降级到28.0.0.1，他们所做的更改正在破坏项目

将软件包版本28.0.0.2降级到28.0.0.1，他们所做的更改正在破坏项目