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Werk #12561: Fix KeyError (site_id) crash on host properties page (2.0.0p2 regression)

Component Setup
Title Fix KeyError (site_id) crash on host properties page (2.0.0p2 regression)
Date Apr 26, 2021
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.1.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
2.0.0p4 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

When opening the host properties page in the setup an exception KeyError ("site_id") could appear in distributed setups. This issue was triggered when a folder has a site attribute configured which does not have a site specific global setting defined. This situation is now cleanly handled to prevent this exception.

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