config.{groupRenderer} threw: {error}; the row is left empty.

Warnings reference › groupRenderer.threw

Identifier

groupRenderer.threw

Raised by

The grid (rendering)

Since

1.6.0

What happened

The host-supplied group-row renderer threw. The group row keeps its place and its height and is drawn empty, so the grouping structure is intact and that one heading has no content. It shares its code path with fullWidth.render.threw and is keyed separately so the two are never confused.

The fix

The error's message is quoted in the line. A group renderer is called for every group row, including the ones the grid generates for empty groups.

Reference

Covered in full at the API reference.