I created a SharePoint list and then clicked 'New' to open the form and then clicked 'Configure Layout'. I edited the JSON for the body and that worked fine. I then I added another column to the list and moved the order of the columns around from the list view. Now when I try to go back in to a new form or edit an existing form, it is blank and when I click 'Configure Layout' it is also blank. I can't figure out how to fix it and I'm at my wits end.