Question

我正在尝试在macOS（10.14.3）上设置Visual Studio 2019，但是在尝试构建默认的Web MVC项目时出现此依赖项错误：

    Target _CheckForNETCoreSdkIsPreview:
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.RuntimeIdentifierInference.targets(151,5): message NETSDK1057: You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview
Target ResolvePackageAssets:
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018: The "ResolvePackageAssets" task failed unexpectedly.
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018: System.TypeLoadException: Could not resolve type with token 0100003f from typeref (expected class 'NuGet.Packaging.Core.PackageDependency' in assembly 'NuGet.Packaging, Version=5.0.0.4, Culture=neutral, PublicKeyToken=31bf3856ad364e35')
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.ResolvePackageAssets+CacheWriter.GetPlatformPackageExclusions () [0x000d7] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.ResolvePackageAssets+CacheWriter..ctor (Microsoft.NET.Build.Tasks.ResolvePackageAssets task, System.IO.Stream stream) [0x0009b] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.ResolvePackageAssets+CacheReader.CreateReaderFromDisk (Microsoft.NET.Build.Tasks.ResolvePackageAssets task, System.Byte[] settingsHash) [0x0003a] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.ResolvePackageAssets+CacheReader..ctor (Microsoft.NET.Build.Tasks.ResolvePackageAssets task) [0x00015] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.ResolvePackageAssets.ReadItemGroups () [0x00000] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.ResolvePackageAssets.ExecuteCore () [0x00018] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.NET.Build.Tasks.TaskBase.Execute () [0x00000] in <9524e6fbf1724027a475d15b01fab866>:0 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute () [0x00023] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-10/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:573 
    /usr/local/share/dotnet/sdk/3.0.100-preview3-010431/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(228,5): error MSB4018:   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 bucket, Microsoft.Build.BackEnd.TaskExecutionMode howToExecuteTask) [0x00212] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-10/external/bockbuild/builds/msbuild-15/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:784 
Done building target "ResolvePackageAssets" in project "TestingApp.csproj" -- FAILED.

Done building project "TestingApp.csproj" -- FAILED.

Build FAILED.

我也尝试使用dotnet run从终端运行它，并且可以运行，但是我不能使用Visual Studio。谢谢。

Answer 1

只需从项目中删除 BIN 和 OBJ 目录并重建即可。

Answer 2

从命令行尝试：

dotnet clean
dotnet构建

对我有用。看看here了解更多信息

Answer 3

根本原因：-

由于Nuget软件包版本兼容性在项目（共享项目，iOS项目，Android项目）中不同而导致的此错误。

解决方案：-

1。更新每个Nuget软件包，其中会在nuget软件包的前面显示更新版本。

2。清洁溶液。

3.Build Solution，

Answer 4

也有同样的问题。原因是，在主项目Build-General的Project Options中，目标框架已更改，不知道为什么。对于我的项目，它应该是Xamarin.Mac Full Net 4.7.2，但是无论出于什么原因，现在它都是Xamarin.Mac Modern。变回完整，一切都很好。

我记得，不久前又发生了另一次VS Mac更新。作为Xamarin的用户，在此期间，我知道很多Xamarin-Update都在破坏事情，以前还不错。

Answer 5

在您的项目/库中尝试以下步骤：

如果您正在使用多个目录结构，则对其应用完全权限
如果您使用的是旧版本的 NuGet，请使用最新或兼容版本更新它们
如果仍然无法正常工作，则删除 bin 文件夹并再次执行步骤 1 和 2。

它对我有用。

Answer 6

只需重建项目。它会自动清理和恢复所需的文件，然后构建项目

Answer 7

使用提升的权限打开 Visual Studio（以管理员身份运行）然后尝试清理和重建。

Answer 8

对我来说，这里的解决方案都不起作用，但 Visual Studio 软件更新完成了这项工作。

这通常发生在 Mono 的 MSBuild（Visual Studio 正在使用它来构建项目）不支持您正在使用的 SDK 版本时，它可以生成许多包 (例如）为 .NET 5 构建并要求 Nuget 5 Packaging 无法使用 MSBuild 构建。

您通常会收到以下错误之一：

Microsoft.NET.Sdk.targets(124, 5): [MSB4018] The "PACKAGE_NAME" task failed unexpectedly.
Microsoft.PackageDependencyResolution.targets(234, 5): [MSB4018] The "ResolvePackageAssets" task failed unexpectedly.

因此，安装或更改为兼容的 MSBuild，或者更改 SDK 通常应该可以解决问题。

您可以在这里找到更多有用的信息：

“ ResolvePackageAssets”任务意外失败

8 个答案: