Werk #19319: Custom graphs: Fix 'Loading graph failed: (Status: 1): max() iterable argument is empty'

Component	User interface
Title	Custom graphs: Fix 'Loading graph failed: (Status: 1): max() iterable argument is empty'
Date	Mar 4, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.4.0p23 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

If y axis labels cannot be computed then the above error is shown. This has been fixed.

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