Werk #17160: Opsgenie: Better error handling

Component	Notifications
Title	Opsgenie: Better error handling
Date	Aug 12, 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 2.3.0p13 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p33 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

In earlier versions some errors (like authentication failures) lead to a traceback.

Errors should be shown in a better way now.

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