This is a MYSQL error that happens usually with varchar fields and when a value exceeds the limits. Usually it could be changed to TEXT or BLOBS or LONGTEXT..but let’s listen to Stiofan, maybe something deep (and wrong) is going on.
Apologize for that, I once tested that back in time and I was unable to import a listing, because i was adding the column package_id in first place, but I tested now and it works if you add the package_id at the very end of the column (At column “z” if you’re using the sample.csv)