The other common input that changed is a trailing comma, like 5,15,25,35,45,55, . These used to parse and now they raise an error, but we can clean these particular issue up in the dataset prior to upgrading so it's less challenging to handle.
Postel law:
be conservative in what you do, be liberal in what you accept from others
https://github.com/floraison/fugit/issues/76#issuecomment-1246043044
Postel law:
Accept trailing commas and
1,,2extra commas.