Build 无法找到解决方案

我尝试在Visual Studio 2013中配置自动生成。我设置

1。构建的解决方案=C:\Users\xxx\Source\Repos\Project\AlarmPrinter\AlarmPrinter.sln

（这是解决方案的精确路径）位于

构建配置-流程

下。但我有以下例外

Exception Message: The project file 'C:\Users\xxx\Source\Repos\Project\AlarmPrinter\AlarmPrinter.sln' was not found. (type FileNotFoundException)
Exception Stack Trace:    at System.Activities.Statements.Throw.Execute(CodeActivityContext context)
   at System.Activities.CodeActivity.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager)
   at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation)
Unable to restore NuGet packages. Details: The directory name is invalid
TF270003: Failed to copy. Ensure the source directory C:\a\bin exists and that you have the appropriate permissions.

如何正确配置生成