Server Error in '/' Application.

Value cannot be null.
Parameter name: category

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

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

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ArgumentNullException: Value cannot be null.
Parameter name: category]
   NopSolutions.NopCommerce.BusinessLogic.SEO.SEOHelper.GetCategorySEName(Category category) +115
   NopSolutions.NopCommerce.BusinessLogic.SEO.SEOHelper.GetManufacturerUrl(Manufacturer manufacturer, Category c) +44
   NopSolutions.NopCommerce.Web.ManufacturerPage.Page_Load(Object sender, EventArgs e) +587
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   NopSolutions.NopCommerce.Web.BaseNopFrontendPage.OnLoad(EventArgs e) +59
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0