column "{col}" is a list column and received...

Warnings reference › list:scalar:*

Identifier

list:scalar:*

Raised by

list

Since

1.74.0

What happened

A list column's cell held one value rather than an array. The grid holds it as a list of one item, so filters and exports treat it as such; the host's row object keeps the single value. Said once per column.

The fix

Pass the cell as an array (['gold'] rather than 'gold'), or declare the column with its scalar type if it never holds several values.

Reference

Covered in full at the API reference.