ifcos-errors-patterns
IfcOpenShell Error Patterns and Debugging
Quick Reference
Decision Tree: Diagnosing IfcOpenShell Errors
Error occurred?
├── RuntimeError
│ ├── "entity not found in schema" → Schema mismatch (§1)
│ ├── "Failed to process shape" → Geometry failure (§4)
│ ├── Entity reference invalid → Entity was removed (§5)
│ └── Invalid STEP data → File corruption (§7)
│
├── AttributeError
│ ├── "entity has no attribute 'X'" → Wrong attribute name / wrong entity type (§2)
│ ├── NoneType has no attribute → Null return not checked (§6)
│ └── 'parent' / 'children' → IFC uses relationships, not tree attributes (§3)
│
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