Seem to have found a solution.

I went to Admin Access Management> Admin Profiles and clicked on Edit for the Administrator User Profile. The BOX_HEADING_PRODUCT_TYPES category at the bottom of the page has four check-boxes of which three were checked by default- Product-Music, Document-General, and Document-Product. When I uncheck these boxes and update the profile I can log in as Administrator and not get any myDebug errors.