I am trying to show a specific privately shared drive folder in my Google page. I am using this guide: https://developers.google.com/apps-script/articles/embedding_docslist_in_sites
I am stuck on Step "8. Replace PASTE_PAGE_URL_HERE in the method getPageByUrl() by the url of your file cabinet."
I have tried every URL combination in "" and I just get a scripting error on the getPageByUrl() method.