Server Error in '/' Application.

Value cannot be null.
Parameter name: item

Description: An unhandled exception occurred.

Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: item

Source Error: 


Line 15:     else
Line 16:     {
Line 17:         string ImageUrl = Sitecore.Resources.Media.MediaManager.GetMediaUrl(ImageField.MediaItem);
Line 18:         mediUrl = ImageUrl;
Line 19:     }

Source File: d:\WebPortal\SitecoreProjects\assanpanel\Website\Views\Detail\DetailPageHalf.cshtml    Line: 17

Stack Trace: 


[ArgumentNullException: Value cannot be null.
Parameter name: item]
   Sitecore.Diagnostics.Assert.ArgumentNotNull(Object argument, String argumentName) +64
   Sitecore.Resources.Media.MediaProvider.GetMediaUrl(MediaItem item) +33
   ASP._Page_Views_Detail_DetailPageHalf_cshtml.Execute() in d:\WebPortal\SitecoreProjects\assanpanel\Website\Views\Detail\DetailPageHalf.cshtml:17
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +148
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +107
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +378
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +91
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +795
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +795
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +81
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +698

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4718.0