这个工作流是一个简单的发送邮件的工作流,昨天还工作正常,今天就有报错了。请帮忙看看错误信息是什么问题,谢谢
RequestorId: fd39f4a7-2d45-0e9d-0000-000000000000. Details: An unhandled exception occurred during the execution of the workflow instance. Exception details: System.ArgumentNullException: Value cannot be null. Parameter name: Input at Microsoft.Activities.Hosting.Runtime.Subroutine.SubroutineChild.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)