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trying to subtract two datetimes

Ok so I am trying to subtract the next time from the previous time in a dataframe column called local_time as indicated by this code. I have also tried this using list comprehension.

    next_df = df.shift(-1)
def time_between (df):
    return datetime.combine(date.today(), next_df['Local Time']) - datetime.combine(date.today(), df['Local Time'])
df['time_diff'] = df.apply(time_between, axis = 1)code here

however I recieve this error when trying to subtract:

return datetime.combine(date.today(), next_df['Local Time']) - datetime.combine(date.today(), df['Local Time'])

TypeError: combine() argument 2 must be datetime.time, not Series


source https://stackoverflow.com/questions/73722135/trying-to-subtract-two-datetimes

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