System.NullReferenceException: Object reference not set to an instance of an object. at Umbraco.Cms.Core.Models.PublishedContent.PublishedContentType..ctor(IContentTypeComposition contentType, IPublishedContentTypeFactory factory) at Our.Umbraco.DocTypeGridEditor.Helpers.DocTypeGridEditorHelper.<>c__DisplayClass15_0.<GetContentTypesByAlias>b__0() at Umbraco.Extensions.AppCacheExtensions.<>c__DisplayClass5_0`1.<GetCacheItem>b__0() at Umbraco.Cms.Core.Cache.SafeLazy.<>c__DisplayClass1_0.<GetSafeLazy>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.ObjectCacheAppCache.Get(String key, Func`1 factory) at Umbraco.Cms.Core.Cache.DeepCloneAppCache.Get(String key, Func`1 factory) at Umbraco.Extensions.AppCacheExtensions.GetCacheItem[T](IAppCache provider, String cacheKey, Func`1 getCacheItem) at Our.Umbraco.DocTypeGridEditor.Helpers.DocTypeGridEditorHelper.GetContentTypesByAlias(String contentTypeAlias) at Our.Umbraco.DocTypeGridEditor.Helpers.DocTypeGridEditorHelper.ConvertValue(String id, String contentTypeAlias, String dataJson) at Our.Umbraco.DocTypeGridEditor.Helpers.DocTypeGridEditorHelper.RenderDocTypeGridEditorItem(IViewComponentHelper helper, IHtmlHelper htmlHelper, Object model) at AspNetCore.App_Plugins_DocTypeGridEditor_Render_DocTypeGridEditor.ExecuteAsync() in W:\Sites\robinsonssquash.co.uk\prod3\wwwroot\App_Plugins\DocTypeGridEditor\Render\DocTypeGridEditor.cshtml:line 4 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 AspNetCore.Views_Partials_grid_editors_base.ExecuteAsync() in W:\Sites\robinsonssquash.co.uk\prod3\wwwroot\Views\Partials\grid\editors\base.cshtml:line 11
