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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-ocw-prod.tres-1\www\Views\Partials\blocklist\Components\ComponentButton.cshtml:line 52
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.Extensions.AppCacheExtensions.<>c__DisplayClass0_0`1.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.Cms.Core.Cache.DeepCloneAppCache.Get(String key, Func`1 factory, Nullable`1 timeout, Boolean isSliding, String[] dependentFiles)
at Umbraco.Extensions.CacheHelperExtensions.CachedPartialView(AppCaches appCaches, IHostingEnvironment hostingEnvironment, IUmbracoContext umbracoContext, IHtmlHelper htmlHelper, String partialViewName, Object model, TimeSpan cacheTimeout, String cacheKey, ViewDataDictionary viewData)
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)