Error in Parsing View "~/views/synwayforms/shopprodukte2outerform.cshtml": System.Web.HttpCompileException (0x80004005): C:\SERVERDATEN\synway4x64_NOW\lask-linz\views\synwayeditfields\editfieldproduct2shoppingcart_LASK.cshtml(11): error CS0012: The type 'HttpClient' is defined in an assembly that is not referenced. You must add a reference to assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. bei System.Web.Compilation.BuildManager.PostProcessFoundBuildResult(BuildResult result, Boolean keyFromVPP, VirtualPath virtualPath) bei System.Web.Compilation.BuildManager.GetBuildResultFromCacheInternal(String cacheKey, Boolean keyFromVPP, VirtualPath virtualPath, Int64 hashCode, Boolean ensureIsUpToDate) bei System.Web.Compilation.BuildManager.GetVPathBuildResultFromCacheInternal(VirtualPath virtualPath, Boolean ensureIsUpToDate) bei System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) bei System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) bei System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound) bei System.Web.Compilation.BuildManager.GetCompiledType(VirtualPath virtualPath) bei System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) bei System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) bei ASP._Page_views_shop_producttemplates_TrikotkonfiguratorHome_LASK_cshtml.Execute() in C:\SERVERDATEN\synway4x64_NOW\lask-linz\views\shop\producttemplates\TrikotkonfiguratorHome_LASK.cshtml:Zeile 250. 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 SynwayMVC.ControllerExtension.RenderPartialViewToString(Controller controller, String viewName, Object model) in D:\a\1\s\SynwayMVC\Utils\ControllerExtension.cs:Zeile 47.