In [2]: settings.server.hostname
---------------------------------------------------------------------------
BoxKeyError                               Traceback (most recent call last)
Cell In[2], line 1
----> 1 settings.server.hostname

File ~/venv/robottelo312/src/dynaconf/dynaconf/utils/boxing.py:18, in evaluate_lazy_format.<locals>.evaluate(dynabox, item, *args, **kwargs)
     16 @wraps(f)
     17 def evaluate(dynabox, item, *args, **kwargs):
---> 18     value = f(dynabox, item, *args, **kwargs)
     19     settings = dynabox._box_config["box_settings"]
     21     if getattr(value, "_dynaconf_lazy_format", None):

File ~/venv/robottelo312/src/dynaconf/dynaconf/utils/boxing.py:41, in DynaBox.__getattr__(self, item, *args, **kwargs)
     39 except (AttributeError, KeyError):
     40     n_item = find_the_correct_casing(item, self) or item
---> 41     return super().__getattr__(n_item, *args, **kwargs)

File ~/venv/robottelo312/src/dynaconf/dynaconf/vendor/box/box.py:360, in Box.__getattr__(self, item)
    358     if self._box_config['default_box']:
    359         return self.__get_default(item)
--> 360     raise BoxKeyError(str(err)) from None
    361 return value

BoxKeyError: "'DynaBox' object has no attribute 'hostname'"

In [3]: settings.set("server.hostname", None)

In [4]: type(settings.server.hostname)
NoneType