Werk #16695: Just show an error message if redis is not reachable

Component	User interface
Title	Just show an error message if redis is not reachable
Date	Apr 17, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0b6 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

The mega menu search produced a crash report if redis was not reachable. Now only an error message is shown.

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