filter references unknown column "{col}"; th...

Warnings reference › filter:col:*

Identifier

filter:col:*

Raised by

The grid (core)

Since

1.0.1

What happened

A condition names a column that has no data handle - it is not a column of this grid, or it is not loaded. There is nothing to test, so the condition is refused: it matches no rows rather than admitting every row, so a bad condition can never widen what the caller sees. filters.set and state.apply already drop a condition naming a column the grid does not declare before it reaches this point; this is the kernel's own fail-closed default for a direct or headless call.

The fix

Check the column id in the condition. A saved filter restored against a different column set is the usual cause.

Reference

Covered in full at the API reference.