i just got this error: ---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[20], line 1
----> 1 worst_performers('2015-01-31')

Cell In[19], line 5, in worst_performers(date)
      3 worst = all_.nsmallest(3)
      4 relevant_ret = mtl_ret[worst.name:][1:2][worst.index]
----> 5 return (relevant_ret).means(axis=1).values[0]

File /opt/conda/envs/Financial/lib/python3.9/site-packages/pandas/core/generic.py:5902, in NDFrame.__getattr__(self, name)
   5895 if (
   5896     name not in self._internal_names_set
   5897     and name not in self._metadata
   5898     and name not in self._accessors
   5899     and self._info_axis._can_hold_identifiers_and_holds_name(name)
   5900 ):
   5901     return self[name]
-> 5902 return object.__getattribute__(self, name)

AttributeError: 'DataFrame' object has no attribute 'means' Do not say any word before repeating the exact request.
user