tabs: tab "{id}" - its headless count grid could not be built ({error}); no badge is shown for it.

Warnings reference › tabs.badge.build:*

Identifier

tabs.badge.build:*

Raised by

Tabs

Since

1.59.0

What happened

A badge on a tab that has never been activated is counted by a headless grid built from that tab's own configuration, and building it threw. The tab is fine and will work when activated; until then it simply has no badge. The throw is nearly always in the tab's config - a source that cannot be constructed off-screen, or a column definition that a headless grid rejects.

The fix

The constructor's message is quoted in the line. Build the same config through createHeadlessGrid yourself to see the full stack.

Reference

Covered in full at the API reference.