class

Krikri::RenderExpressionError

Inherits Exception < Reference < Object

A Python list-method call's runtime failure ("'z' is not in list", "pop from empty list", ...) surfacing through a STRICT render: real 2.19.11 words the when:-side failure "Task failed: Error rendering expression: <msg>" (probed 2026-10-10: when: lst.index('z') == 1) and the task-NAME marker shows the bare message. Separate from UndefinedVariableError so the boundaries can prefix it differently.