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

Component

User interface

Title

Fix possible error on using host or service level filter

Date

Jan 3, 2023

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

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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