OpenAtlas

I try to access the API with json payload. It works fine, but when I'm using the get_by_menu_item function with actor as argument the application crashes with following Stacktrace:

Traceback (most recent call last):
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 2463, in __call__
    return self.wsgi_app(environ, start_response)
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 2449, in wsgi_app
    response = self.handle_exception(e)
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 1866, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\_compat.py", line 39, in reraise
    raise value
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 2446, in wsgi_app
    response = self.full_dispatch_request()
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 1951, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 1820, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\_compat.py", line 39, in reraise
    raise value
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 1949, in full_dispatch_request
    rv = self.dispatch_request()
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\flask\app.py", line 1935, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "C:\Users\bkoschicek\Desktop\OpenAtlas\oa-dev\openatlas\util\util.py", line 370, in wrapped
    return f(*args, **kwargs)
  File "C:\Users\bkoschicek\Desktop\OpenAtlas\oa-dev\openatlas\views\api.py", line 42, in api_get_entities_by_json
    return jsonify(Api.get_entities_by_menu_item(code_=item))
  File "C:\Users\bkoschicek\Desktop\OpenAtlas\oa-dev\openatlas\models\api.py", line 74, in get_entities_by_menu_item
    for entity in Entity.get_by_menu_item(code_):
  File "C:\Users\bkoschicek\Desktop\OpenAtlas\oa-dev\openatlas\models\entity.py", line 390, in get_by_menu_item
    aliases = True if menu_item == 'actor' and current_user.settings[
  File "C:\Users\bkoschicek\Desktop\tnt\python\venv\lib\site-packages\werkzeug\local.py", line 348, in __getattr__
    return getattr(self._get_current_object(), name)
AttributeError: 'AnonymousUserMixin' object has no attribute 'settings'

The API is set to public and I'm not logged in