PS C:\Users\x\Main\Games\Dota\Grid Customizer> d2grid .\example.json
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "c:\users\x\.local\bin\d2grid.exe\__main__.py", line 6, in <module>
    sys.exit(main())
             ~~~~^^
  File "C:\Users\x\pipx\venvs\d2grid\Lib\site-packages\d2grid\main.py", line 32, in main
    ).create_grid(settings.configs)
      ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "C:\Users\x\pipx\venvs\d2grid\Lib\site-packages\d2grid\generator\grid_generator.py", line 48, in create_grid
    new_configs = [self.create_config(config_settings) for config_settings in configs]
                   ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "C:\Users\x\pipx\venvs\d2grid\Lib\site-packages\d2grid\generator\grid_generator.py", line 41, in create_config
    row = [self.create_category(category_s, column_s, y) for category_s, column_s in
           ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\x\pipx\venvs\d2grid\Lib\site-packages\d2grid\generator\grid_generator.py", line 24, in create_category
    hero_ids = self.sources[category_opts.source](category_opts.param)
  File "C:\Users\x\pipx\venvs\d2grid\Lib\site-packages\d2grid\sources\file\source.py", line 29, in __call__
    config = get_item(self._data.configs, key=param.config, name_field="config_name")
  File "C:\Users\x\pipx\venvs\d2grid\Lib\site-packages\d2grid\sources\file\source.py", line 11, in get_item
    return next(i for i in items if getattr(i, name_field) == key)
StopIteration
PS C:\Users\x\Main\Games\Dota\Grid Customizer>