Object reference not set to an instance of an object.

at AspNetCore.Views_Partials_BlockList_Templates_California_Components_ArticleListComponent.ExecuteAsync() in /home/site/wwwroot/Views/Partials/BlockList/Templates/California/Components/ArticleListComponent.cshtml:line 333 at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context) at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments) at AspNetCore.Views_Partials_BlockList_Templates_California_Blocks.<ExecuteAsync>g__RenderNestedBlockAsync|0_0(BlockGridItem block, Boolean isRow, Boolean isWrapped) in /home/site/wwwroot/Views/Partials/BlockList/Templates/California/Blocks.cshtml:line 73 at AspNetCore.Views_Partials_BlockList_Templates_California_Blocks.<ExecuteAsync>g__RenderNestedBlockAsync|0_0(BlockGridItem block, Boolean isRow, Boolean isWrapped) in /home/site/wwwroot/Views/Partials/BlockList/Templates/California/Blocks.cshtml:line 69 at AspNetCore.Views_Partials_BlockList_Templates_California_Blocks.ExecuteAsync() in /home/site/wwwroot/Views/Partials/BlockList/Templates/California/Blocks.cshtml:line 117