500 error in epi edit tab. Lazy loaded property value is not supported by the current property instance

When bringing up episerver in edit mode, the page tree does not display and just keeps trying to load.

Browser Dev Tools shows this:

HTTP500: SERVER ERROR - The server encountered an unexpected condition that prevented it from fulfilling the request. (XHR)GET - localhost/EPiServer/cms/Stores/contentstructure/?referenceId=1&query=getchildren&typeIdentifiers=episerver.core.pagedata&allLanguages=true&sort()&dojo.preventCache=1575909858055

Pasting this in to the browser gets this error: "Lazy loaded property value is not supported by the current property instance"

localhost/EPiServer/cms/Stores/contentstructure/?referenceId=1&query=getchildren&typeIdentifiers=episerver.core.pagedata&allLanguages=true

I have written code to load all the pages in to memory. Once this is done. the tree can be edit page can be refreshed and show. Once the brower is closed, the tree does not load again. All of this has been done in localhost.

epi version: 11.13.2.0

The following code gets a timeout. It can't find root. If I call FindPagesWithCriteria on Start-Page then it works untill I close the browser.

IContentRepository repository = ServiceLocator.Current.GetInstance<IContentRepository>();
PageReference root = PageReference.RootPage;
IEnumerable<ReferenceInformation> references = repository.GetReferencesToContent(root, true).Take(1).ToList();

We also get this error under Admin->Config->Rebuild Name for Web Addresses

"Lazy loaded property value is not supported by the current property instance"