unexpected keyword argument 'col'

[loveneet29]

Iam i doing something wrong
data = (AudioItemList
.from_df(df,NSYNTH_AUDIO,col=1)
.split_by_folder()
.databunch(bs=batch_size, tfms=tfms))

TypeError Traceback (most recent call last)
in
1 data = (AudioItemList
----> 2 .from_df(df,NSYNTH_AUDIO,col=1)
3 .split_by_folder()
4 .databunch(bs=batch_size, tfms=tfms))

~\Documents\fastai_audio\data.py in from_df(cls, df, path, col, folder, suffix, length_col)
96 suffix at the end. create_func is used to open the audio files."""
97 suffix = suffix or ''
---> 98 res = super().from_df(df, path=path, col=col, length_col=length_col)
99 res.items = np.char.add(np.char.add(f'{folder}/', res.items.astype(str)), suffix)
100 res.items = np.char.add(f'{res.path}/', res.items)

~\Anaconda3\lib\site-packages\fastai\data_block.py in from_df(cls, df, path, cols, processor, **kwargs)
135 inputs = df.iloc[:,df_names_to_idx(cols, df)]
136 assert not inputs.isna().any().any(), f"You have NaN values in column(s) {cols} of your dataframe, please fix it."
--> 137 res = cls(items=_maybe_squeeze(inputs.values), path=path, inner_df=df, processor=processor, **kwargs)
138 return res
139

TypeError: init() got an unexpected keyword argument 'col'