Werk #22797: Unit lookup: handle missing metric

Component

User interface

Title

Unit lookup: handle missing metric

Date

Oct 19, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p18 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p39	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When the unit of a selected metric was looked up for a form that lets you choose a metric (for example in graph or dashboard settings), a request without a metric produced a crash report with KeyError: 'metric'.

Such a request is now handled like an empty metric selection, and the default unit is preselected.

To the list of all Werks