'force' is an invalid keyword argument for rename()

The 'force' parameter is not a valid keyword argument for the `rename()` method in Python's pandas library.

If you are trying to rename columns in a pandas DataFrame, you can use the `rename()` method as follows:

import pandas as pd

# create a sample DataFrame
df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})

# rename columns
df = df.rename(columns={'A': 'new_A', 'B': 'new_B'})

This will rename the columns 'A' and 'B' to 'new_A' and 'new_B', respectively. If there are any conflicts between existing column names and new names, the `rename()` method will raise a `ValueError` exception. In this case, you can either modify the new column names or set the `columns` parameter to a list of new column names of the same length as the existing column names.