I can't upload a CSV file document to an empty collection.

I tried removing hyphens and other special characters. Then I thought "maybe flutterflow can't handle this much data in one time, so I uploaded 150 rows, then 100, then 2 rows. The copy of the CSV I made now has 2 columns and it looks like this

exName exDiff

pullup easy

dip easy

It couldn't be more simple than this, I even removed capital letters, and I also check every time the settings are right.

I can't think of any other solution at all.

btw if this helps I used google spreadsheets to write the documents.