One thing to check: have you got an extra column (eg index column) in your CSV? If so that can be misinterpreted as your ID column. Had that same error an embarrassingly large number of times when I've forgotten to add `index=False` when saving my submission csv.
One thing to check: have you got an extra column (eg index column) in your CSV? If so that can be misinterpreted as your ID column. Had that same error an embarrassingly large number of times when I've forgotten to add `index=False` when saving my submission csv.