Werk #15120: Fix possible error on using host or service level filter

Komponente User interface
Titel Fix possible error on using host or service level filter
Datum 03.01.2023
Level Kleine Änderung
Klasse Bugfix
Kompatibilität Kompatibel - benötigt kein manuelles Eingreifen
Checkmk versions & editions
2.2.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.1.0p19 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

If you used host or service level filter in views with an event datasource, e.g. "Events of host & services", the error "Internal error: 'NoneType' object is not subscriptable" occurred.

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