Column '{colId}' cell.render threw; the cell falls back to its formatted text.

Warnings reference › render-fn:*

Identifier

render-fn:*

Raised by

The grid (rendering)

Since

1.0.1

What happened

The renderer function threw while painting a cell. The throw is caught per column - not per cell - so a million-row grid produces one line, and the cell shows the column's formatted text instead of the renderer's output. The grid keeps painting.

The fix

The error is attached to the console line. A renderer is called for every visible cell including ones whose value is null, which is the usual cause of the first throw.

Reference

Covered in full at the API reference.