Errors on Console when new row is added in TSV for Front matter

[elsylambert]

v2.1.0 build 868a6c3 QA.
When the reference is Front matter in the navigation bar, Click on + to add a note or TWL in TSV, note that when user clicks ADD in the new row modal, error is thrown in the console, but no indication to the user.

Private Zenhub Image

DOD: Users should be able to add a Note or TWL for Front matter reference.