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Werk #19051: Custom graphs: Fix internal error if an operation could not be found

Component User interface
Title Custom graphs: Fix internal error if an operation could not be found
Date Feb 9, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.6.0b1
Not yet released
Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.5.0b1
Not yet released
Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.4.0p22
Not yet released
Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

Custom graphs might have crashed with

Internal error: operator_name='+' operands=[...] ...

in certain scenarios.

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