Werk #13305: Fixed exception when using BI acknowledgments/downtimes in GUI

Component	BI
Title	Fixed exception when using BI acknowledgments/downtimes in GUI
Date	May 11, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0b9 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

The buttons Acknowledge problems and Schedule downtimes did not work on an aggregation page.

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