Kom overnachten bij Grand Hotel Amstelveen

An Error occured for component componentButton, the error is Object reference not set to an instance of an object., stacktrace at AspNetCore.Views_Partials_blocklist_Components_ComponentButton.ExecuteAsync() in d:\www\um-netjesbeheer--2\www\Views\Partials\blocklist\Components\ComponentButton.cshtml:line 33 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.ViewFeatures.HtmlHelper.RenderPartialCoreAsync(String partialViewName, Object model, ViewDataDictionary viewData, TextWriter writer) at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.PartialAsync(String partialViewName, Object model, ViewDataDictionary viewData) at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperPartialExtensions.Partial(IHtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) at Umbraco.Extensions.CacheHelperExtensions.<>c__DisplayClass0_0.b__0() at Umbraco.Cms.Core.Cache.SafeLazy.<>c__DisplayClass1_0.b__0() --- End of stack trace from previous location --- at Umbraco.Cms.Core.Cache.ObjectCacheAppCache.Get(String key, Func`1 factory, Nullable`1 timeout, Boolean isSliding, String[] dependentFiles) at Umbraco.Extensions.HtmlHelperRenderExtensions.CachedPartialAsync(IHtmlHelper htmlHelper, String partialViewName, Object model, TimeSpan cacheTimeout, Boolean cacheByPage, Boolean cacheByMember, ViewDataDictionary viewData, Func`3 contextualKeyBuilder) at TRES.Umbraco.Business.Extensions.UmbracoContextExtensions.CachedPartialForBlockListElementAsync(IHtmlHelper htmlHelper, ViewDataDictionary viewData, BlockListItem component, String viewPath, Int32 cacheTimeoutInMinutes, String uniqueKey, Boolean cacheByMember) at TRES.Umbraco.Business.Extensions.UmbracoContextExtensions.GetCachedHtmlForBlockListElementAsync(IHtmlHelper htmlHelper, ViewDataDictionary viewData, BlockListItem component, String contentTypeAlias, StringBuilder componentsHtml) at TRES.Umbraco.Business.Extensions.UmbracoContextExtensions.GetCachedHtmlForBlockListElementAsync(IHtmlHelper htmlHelper, ViewDataDictionary viewData, BlockListItem component, String contentTypeAlias, StringBuilder componentsHtml) at TRES.Umbraco.Business.Extensions.UmbracoContextExtensions.RenderComponentsAsync(IUmbracoContext context, IHtmlHelper htmlHelper, IViewComponentHelper viewComponentHelper, BlockListModel components, ViewDataDictionary viewData, IDictionary`2 optionalAlternativeViews)