Column '{colId}' cell must be an object or a renderer name.

Warnings reference › cell-type:*

Identifier

cell-type:*

Raised by

The grid (rendering)

Since

1.0.1

What happened

The column's cell property is neither a renderer name nor a spec object, so the whole cell specification is discarded and the column renders with defaults - no renderer, no template, no decoration, no class rules.

The fix

Give cell a renderer name, or an object holding render, template, decoration, class, classWhen and so on.

The smallest fix

columns: [{ id: 'done', cell: { render: 'checkbox' } }]

Reference

Covered in full at the API reference.