[Python] How to Fix SettingWithCopyWarning When Modifying a Pandas DataFrame? [duplicate]

I'm working with a Pandas DataFrame and trying to fill NaN values in a column, but I keep getting the following warning:

C:\Users\USER\anaconda3\envs\learn-env\lib\site-packages\pandas\core\series.py:4517: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame

See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy
return super().fillna(


df["Total.Fatal.Injuries"].fillna(0, inplace=True)
df["Total.Serious.Injuries"].fillna(0, inplace=True)

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