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Werk #17165: Fix warning on rule creation of "Icon image for..."

Component Setup
Title Fix warning on rule creation of "Icon image for..."
Date Aug 15, 2024
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.4.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0p14 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.2.0p33 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

If you created a new rule "Icon image for hosts in status GUI" or "Icon image for services in status GUI", a warning like "Unable to read current options of this rule" was shown.

The rule could still be created.

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