Caught Exception: System.ArgumentException: Value cannot be null or empty.
Parametername: linkText
   bei System.Web.Mvc.Html.LinkExtensions.ActionLink(HtmlHelper htmlHelper, String linkText, String actionName, String controllerName, RouteValueDictionary routeValues, IDictionary`2 htmlAttributes)
   bei ABX_WebSite.Helpers.BreadcrumbHelper.Breadcrumb(HtmlHelper htmlHelper, List`1 LinkData, Object htmlAttributes) in C:\Users\navab\Documents\Visual Studio 2017\Projects\ABX_WebSite\ABX_WebSite\Helpers\BreadcrumbHelper.cs:Zeile 28.
   bei ASP._Page_Views_Shared__LayoutProducts_cshtml.Execute() in C:\inetpub\wwwroot\ABX_WebSite\Views\Shared\_LayoutProducts.cshtml:Zeile 33.
   bei System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   bei System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   bei System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   bei System.Web.WebPages.WebPageBase.<>c__DisplayClass3.b__2(TextWriter writer)
   bei System.Web.WebPages.WebPageBase.Write(HelperResult result)
   bei System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body)
   bei System.Web.WebPages.WebPageBase.PopContext()
   bei System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   bei System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   bei System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   bei System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
   bei System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.b__1e(IAsyncResult asyncResult)
   bei System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   bei System.Web.Mvc.Controller.b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState)
   bei System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   bei System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   bei System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   bei System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   bei System.Web.Mvc.MvcHandler.b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   bei System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   bei System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   bei System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   bei System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)