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.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.DeepCloneAppCache.Get(String key, Func`1 factory)
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 AspNetCoreGeneratedDocument.App_Plugins_DocTypeGridEditor_Render_DocTypeGridEditor.ExecuteAsync()
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 E:\sites\roennehavn\Views\Partials\grid\editors\base.cshtml:line 22
Denmark's largest excavator has been turning during construction. Photo taken during the event: Open Building Site, where all citizens were given the opportunity to inspect the construction.Event: Open Construction Site 2018Event: Open Construction Site 2018. Children and adults were given the opportunity to see the large machines that Per Aarsleff A / S and VG Entrepreneur use.99/5000 Event Open Construction Site: Rene K. S. from Per Aarsleff A / S tells about the project on the construction site.Event: Open Construction Site. Thomas Bendtsen, CEO, in dialogue with a visitor.Dredging vessel in operation.Spun iron is transported to Rønne.There is excavation. The water depth must end at 11 meters.The hammer is in the process of knocking the spun iron into quay constructions.The spun iron for the new quay constructions is beaten in place.JackUp'en is tugged