AttributeError: 'numpy.float64' object has no attribute 'strftime'

This error occurs when you try to use the strftime() method on a numpy.float64 object.
The strftime() method is used to convert a date or time object into a string representation. However, numpy.float64 is a numeric data type and does not have any datetime-related attributes or methods.
To fix this error, make sure that you are passing a valid date or time object to the strftime() method. If you are trying to convert a numpy array of dates, you can first convert it to a datetime object using the datetime module and then apply the strftime() method to it.
Here is an example:
import numpy as np
from datetime import datetime

# create a numpy array of dates
dates = np.array(['2022-01-01', '2022-01-02', '2022-01-03'], dtype='datetime64')

# convert the numpy array to a list of datetime objects
dates_list = [datetime.utcfromtimestamp(date.tolist()/1e9) for date in dates]

# apply the strftime() method to the datetime objects
formatted_dates = [date.strftime('%Y-%m-%d') for date in dates_list]

print(formatted_dates) # ['2022-01-01', '2022-01-02', '2022-01-03']
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In this example, we first create a numpy array of dates and then convert it to a list of datetime objects. Finally, we apply the strftime() method to each datetime object in the list to get the formatted dates.