KeyError: 'bpy_prop_collection[key]: key "" not found'

[syproduction]

When pushing Define button i am getting this error message.

Error: Python: Traceback (most recent call last):
  File "/Users/USERNAME/Library/Application Support/Blender/4.0/scripts/addons/anton-0-2-1/definer.py", line 206, in execute
    active_object = bpy.data.objects[scene.anton.filename]
KeyError: 'bpy_prop_collection[key]: key "" not found'

Both taichi-build and native-build
All libs installed.
System: M1 macbook, MacOS 14.3.1 (23D60)