Column '{colId}' template has an unclosed '{{'. The rest is treated as text.

Warnings reference › tpl-open:*

Identifier

tpl-open:*

Raised by

The grid (rendering)

Since

1.0.1

What happened

A cell template opened an interpolation and never closed it. An unterminated {{ is a typo rather than a feature, so everything from it to the end of the template is emitted as literal text - the braces will be visible in the cell.

The fix

Close the interpolation.

The smallest fix

cell: { template: '{{ value }} units' }

Reference

Covered in full at the API reference.