Traceback (most recent call last):
  File "/home/ray/shire-academy-stage3b-fast-object-builder/scripts/fast_object_builder.py", line 316, in <module>
    raise SystemExit(main())
                     ^^^^^^
  File "/home/ray/shire-academy-stage3b-fast-object-builder/scripts/fast_object_builder.py", line 248, in main
    "safe_wall_thickness": float(parameters.get("wall_thickness_mm") or parameters.get("height_mm")) >= float(spec["safety"]["minimum_wall_mm"]),
                                                                                                              ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
KeyError: 'minimum_wall_mm'