```
os: Windows
os_version: 10.0.22631
python_version: 3.11.9
architecture: ('64bit', 'WindowsPE')
machine: AMD64
processor: AMD64 Family 25 Model 97 Stepping 2, AuthenticAMD
blender_version: 4.3.2
bonsai_version: 0.8.1
bonsai_commit_hash: None
last_actions: 
# operator: BIM_OT_hotkey
# operator: BIM_OT_add_constr_type_instance
# ifcopenshell.api: root.create_entity
>>> {"ifc_class": "IfcDoor", "predefined_type": "None", "name": "Door"}
# ifcopenshell.api: owner.create_owner_history
>>> {}
# ifcopenshell.api: spatial.assign_container
>>> {"products": [{"cast_type": "entity_instance", "value": 57704, "Name": "Door"}], "relating_structure": {"cast_type": "entity_instance", "value": 28032, "Name": "1.kerros"}}
# ifcopenshell.api: aggregate.unassign_object
>>> {"products": [{"cast_type": "entity_instance", "value": 57704, "Name": "Door"}]}
# ifcopenshell.api: owner.update_owner_history
>>> {"element": {"cast_type": "entity_instance", "value": 28125, "Name": null}}
# ifcopenshell.api: type.assign_type
>>> {"related_objects": [{"cast_type": "entity_instance", "value": 57704, "Name": "Door"}], "relating_type": {"cast_type": "entity_instance", "value": 27204, "Name": "O10v"}}
# ifcopenshell.api: owner.update_owner_history
>>> {"element": {"cast_type": "entity_instance", "value": 42217, "Name": null}}
# ifcopenshell.api: type.map_type_representations
>>> {"related_object": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}, "relating_type": {"cast_type": "entity_instance", "value": 27204, "Name": "O10v"}}
# ifcopenshell.api: geometry.map_representation
>>> {"representation": {"cast_type": "entity_instance", "value": 27179, "Name": null}}
# ifcopenshell.api: geometry.assign_representation
>>> {"product": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}, "representation": {"cast_type": "entity_instance", "value": 57711, "Name": null}}
# ifcopenshell.api: owner.update_owner_history
>>> {"element": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}}
# ifcopenshell.api: geometry.map_representation
>>> {"representation": {"cast_type": "entity_instance", "value": 27193, "Name": null}}
# ifcopenshell.api: geometry.assign_representation
>>> {"product": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}, "representation": {"cast_type": "entity_instance", "value": 57719, "Name": null}}
# ifcopenshell.api: owner.update_owner_history
>>> {"element": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}}
# ifcopenshell.api: geometry.map_representation
>>> {"representation": {"cast_type": "entity_instance", "value": 27202, "Name": null}}
# ifcopenshell.api: geometry.assign_representation
>>> {"product": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}, "representation": {"cast_type": "entity_instance", "value": 57726, "Name": null}}
# ifcopenshell.api: owner.update_owner_history
>>> {"element": {"cast_type": "entity_instance", "value": 57704, "Name": "Door"}}
# ifcopenshell.api: spatial.assign_container
>>> {"products": [{"cast_type": "entity_instance", "value": 57704, "Name": "Door"}], "relating_structure": {"cast_type": "entity_instance", "value": 28032, "Name": "1.kerros"}}
last_error: Traceback (most recent call last):
  File "C:\Users\Xxxxxx\AppData\Roaming\Blender Foundation\Blender\4.3\extensions\.local\lib\python3.11\site-packages\bonsai\bim\ifc.py", line 442, in execute_ifc_operator
    result = getattr(operator, "_execute")(context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Xxxxxx\AppData\Roaming\Blender Foundation\Blender\4.3\extensions\.local\lib\python3.11\site-packages\bonsai\bim\module\model\product.py", line 481, in _execute
    tool.Model.add_filled_opening(building_obj, obj)
  File "C:\Users\Xxxxxx\AppData\Roaming\Blender Foundation\Blender\4.3\extensions\.local\lib\python3.11\site-packages\bonsai\tool\model.py", line 1954, in add_filled_opening
    FilledOpeningGenerator().generate(filling_obj, voided_obj)
  File "C:\Users\Xxxxxx\AppData\Roaming\Blender Foundation\Blender\4.3\extensions\.local\lib\python3.11\site-packages\bonsai\bim\module\model\opening.py", line 91, in generate
    layers = tool.Model.get_material_layer_parameters(element)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\Xxxxxx\AppData\Roaming\Blender Foundation\Blender\4.3\extensions\.local\lib\python3.11\site-packages\bonsai\tool\model.py", line 543, in get_material_layer_parameters
    if material.is_a("IfcMaterialLayerSet"):
       ^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'is_a'

ifc: Project 1 B-osa 1-2.krs_12c.3.2025.ifc
schema: IFC4
preprocessor_version: IfcOpenShell 0.8.1
originating_system: Bonsai 0.8.1
```