Werk #22132: Views: fix crash on single service views without a service context

Component

User interface

Title

Views: fix crash on single service views without a service context

Date

Aug 18, 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
2.5.0p12 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p36 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When a view showing a single service was opened without a service in its context, the whole page crashed with KeyError: service instead of rendering. This could happen for example through a hand written or outdated bookmark, or a link that lost its service parameter.

Such a view now renders again. Its breadcrumb ends at the host it belongs to, instead of trying to show a service level that has no service to name.

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