CSV parse errors are ignored #558
Description
https://github.com/Gapminder/ddf-validation/blob/master/src/utils/file.ts#L193
https://www.papaparse.com/docs#results
parse result .error property is never checked.
Currently gapminder world DAG in airflow sometimes errors on this line because csvLine is undefined.
https://github.com/Gapminder/ddf-validation/blob/master/src/utils/file.ts#L197