Werk #14466: Fix ValueError on usage of empty service level filter

Component User interface
Title Fix ValueError on usage of empty service level filter
Date Aug 9, 2022
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.2.0i1 2.1.0p10
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

If "Host service level" or "Service service level" was used without "From" and "To" values in views, the error "ValueError: invalid literal for int() with base 10: ''" occurred.

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