C# 获取错误'；错误MSB4018“的；GenerateFeatureFileCodeBehindTask“；任务意外失败；从要素文件生成步骤定义时

Visual Studio:2017 C# Specflow版本：3.4.31

Severity    Code    Description Project File    Line    Suppression State
Error   MSB4018 The "GenerateFeatureFileCodeBehindTask" task failed unexpectedly.
System.Exception: Unit test Provider already set.
   at TechTalk.SpecFlow.UnitTestProvider.UnitTestProviderConfiguration.UseUnitTestProvider(String unitTestProviderName)
   at TechTalk.SpecFlow.NUnit.Generator.SpecFlowPlugin.GeneratorPlugin.Initialize(GeneratorPluginEvents generatorPluginEvents, GeneratorPluginParameters generatorPluginParameters, UnitTestProviderConfiguration unitTestProviderConfiguration)
   at TechTalk.SpecFlow.Generator.GeneratorContainerBuilder.LoadPlugins(ObjectContainer container, GeneratorPluginEvents generatorPluginEvents, UnitTestProviderConfiguration unitTestProviderConfiguration, IEnumerable`1 generatorPlugins)
   at TechTalk.SpecFlow.Generator.GeneratorContainerBuilder.CreateContainer(SpecFlowConfigurationHolder configurationHolder, ProjectSettings projectSettings, IEnumerable`1 generatorPluginInfos, IObjectContainer parentObjectContainer)
   at SpecFlow.Tools.MsBuild.Generation.WrappedGeneratorContainerBuilder.BuildGeneratorContainer(SpecFlowConfigurationHolder specFlowConfigurationHolder, ProjectSettings projectSettings, IReadOnlyCollection`1 generatorPluginInfos, IObjectContainer rootObjectContainer)
   at SpecFlow.Tools.MsBuild.Generation.GenerateFeatureFileCodeBehindTaskExecutor.Execute()
   at SpecFlow.Tools.MsBuild.Generation.GenerateFeatureFileCodeBehindTask.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() LearningStepByStep  C:\Users\***\.nuget\packages\specflow.tools.msbuild.generation\3.4.31\build\SpecFlow.Tools.MsBuild.Generation.targets   93  

严重性代码描述项目文件行抑制状态
错误MSB4018“GenerateFeatureFileCodeBehindTask”任务意外失败。
System.Exception:已设置单元测试提供程序。
位于TechTalk.SpecFlow.UnitTestProvider.UnitTestProviderConfiguration.UseUnitTestProvider（字符串unitTestProviderName）
在TechTalk.SpecFlow.NUnit.Generator.SpecFlowPlugin.GeneratorPlugin.Initialize（GeneratorPlugineEvents GeneratorPlugineEvents，GeneratorPluginParameters GeneratorPluginParameters，UnitTestProviderConfiguration UnitTestProviderConfiguration）
在TechTalk.SpecFlow.Generator.GeneratorContainerBuilder.LoadPlugins（ObjectContainer容器、GeneratorPlugineEvents GeneratorPlugineEvents、UnitTestProviderConfiguration UnitTestProviderConfiguration、IEnumerable`1 generatorPlugins）
在TechTalk.SpecFlow.Generator.GeneratorContainerBuilder.CreateContainer（SpecFlowConfigurationHolder configurationHolder，ProjectSettings，ProjectSettings，IEnumerable`1 generatorPluginInfos，IObjectContainer parentObjectContainer）
位于SpecFlow.Tools.MsBuild.Generation.WrappedGeneratorContainerBuilder.BuildGeneratorContainer（SpecFlowConfigurationHolder SpecFlowConfigurationHolder，ProjectSettings ProjectSettings，IReadOnlyCollection`1 generatorPluginInfos，IObjectContainer rootObjectContainer）
位于SpecFlow.Tools.MsBuild.Generation.GenerateFeatureFileCodeBehindTaskExecutor.Execute（）处
在SpecFlow.Tools.MsBuild.Generation.GenerateFeatureFileCodeBehindTask.Execute（）处
位于Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ItaskeExecutionHost.Execute（）
在Microsoft.Build.BackEnd.TaskBuilder.d_u26.MoveNext（）学习步骤C:\Users\***\.nuget\packages\specflow.tools.msbuild.generation\3.4.31\Build\specflow.tools.msbuild.generation.93

如果项目中有以下两个NuGet软件包，则会出现此错误：

• SpecRun.SpecFlow*
• SpecFlow.xUnit
• SpecFlow.NUnit
• SpecFlow.MsTest

发件人：

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由于SpecFlow 3，您可以通过NuGet软件包配置正在使用的单元测试运行程序。只需删除您不想使用的单元测试运行程序的NuGet包，错误就会消失。

您好，欢迎使用StackOverflow。请提供帮助，以帮助我们进一步诊断问题。提供没有上下文的堆栈跟踪没有帮助。感谢您解析我的查询Andreas Willich