Error: Workflow error - Please check field 'Config' of row number 1: BAD_CSV A list must be formatted as a JSON array with length of 20 or fewer entries Expected a List of texts; received: ''

[gaharrington]

What is the correct way to format a .csv to import into a List of Texts?

My dataset of three text items:
Item,Cost
300,120
2

I have tried:
[“Item,Cost”,“300,120”,“2”]