Werk #14890: Fix possible error on filtering service level of hosts

Component	User interface
Title	Fix possible error on filtering service level of hosts
Date	Oct 26, 2022
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) 2.1.0p16 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Using the filter "Host service level" for views with hosts with configured custom attributes could lead to an error message like "Internal error: invalid literal for int() with base 10".

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