TypeError: unsupported operand type(s) for /: 'str' and 'str' about obsidiantools HOT 3 OPEN

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TypeError                                 Traceback (most recent call last)
<ipython-input-16-5147b4bd015c> in <module>
      1 vault.connect()
----> 2 print(vault.get_note_metadata())

~/opt/miniconda3/envs/jupyter/lib/python3.9/site-packages/obsidiantools/api.py in get_note_metadata(self)
   1154               .rename(columns={'file_exists': 'note_exists'})
   1155               .rename_axis('note'))
-> 1156         df = (df.pipe(self._create_note_metadata_columns)
   1157               .pipe(self._clean_up_note_metadata_dtypes)
   1158               )

~/opt/miniconda3/envs/jupyter/lib/python3.9/site-packages/pandas/core/generic.py in pipe(self, func, *args, **kwargs)
   5510         ...  )  # doctest: +SKIP
   5511         """
-> 5512         return com.pipe(self, func, *args, **kwargs)
   5513 
   5514     # ----------------------------------------------------------------------

~/opt/miniconda3/envs/jupyter/lib/python3.9/site-packages/pandas/core/common.py in pipe(obj, func, *args, **kwargs)
    495         return func(*args, **kwargs)
    496     else:
--> 497         return func(obj, *args, **kwargs)
    498 
...
-> 1167                                       [self._dirpath / str(f)
   1168                                        for f in df['rel_filepath'].tolist()],
   1169                                       np.NaN)

TypeError: unsupported operand type(s) for /: 'str' and 'str'