SharePoint 2013 workflow is suspended. and prompt the error "An unhandled exception occurred during the execution of the workflow instance."

Question

As title, May I Know any steps to solve the problems. Many thanks.

Exception: 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)

Answer 1

Form your error message i can tell this, You are trying to pass the "Null" value where the field value is required. It might be occur while trying to create/update an item.

Please try to log the each steps to find the error statement.