KeyError: 'Class JSONField not found in lookup.'

[martin-san03]

I'm not sure is related to this library, but maybe you can help me.

I'm using to_jsonschema on a rest_framework.serializers.ModelSerializer and I have this error:

    'json_schema': to_jsonschema(serializer_instance)
  File "c:\Private\ai\crackit\.venv\lib\site-packages\drf_jsonschema_serializer\convert.py", line 38, in to_jsonschema
    sub_schema = field_to_jsonschema(field)
  File "c:\Private\ai\crackit\.venv\lib\site-packages\drf_jsonschema_serializer\convert.py", line 23, in field_to_jsonschema
    converter = field_to_converter[field]
  File "c:\Private\ai\crackit\.venv\lib\site-packages\rest_framework\utils\field_mapping.py", line 40, in __getitem__
    raise KeyError('Class %s not found in lookup.' % base_class.__name__)
KeyError: 'Class JSONField not found in lookup.'

I have debugged the code and it seems is ussing rest_framework.serializers.ModelSerializer.serializer_field_mapping

Which has this particular If to add JSONField to the mapping:

        ...
        models.SlugField: SlugField,
        models.SmallIntegerField: IntegerField,
        models.TextField: CharField,
        models.TimeField: TimeField,
        models.URLField: URLField,
        models.UUIDField: UUIDField,
        models.GenericIPAddressField: IPAddressField,
        models.FilePathField: FilePathField,
    }
    if hasattr(models, 'JSONField'):
        serializer_field_mapping[models.JSONField] = JSONField

Does someone known why I have this error?