'numpy.int64' object has no attribute 'to_pydatetime' in backtrader feed

[mmed pod]

I am unable to fix the error - 'numpy.int64' object has no attribute 'to_pydatetime', I will be really grateful, if anyone could please help me out in this? I have already tried uninstalling pyfolio and itstalling it from git. Please see the complete code below

import os
import glob
import requests
import pandas as pd
from nsepy import *
from datetime import datetime
import backtrader as bt
import backtrader.feeds as btfeeds

from __future__ import (absolute_import, division, print_function,
                    unicode_literals)

class TestStrategy(bt.Strategy):

def log(self, txt, dt=None):
    ''' Logging function for this strategy'''
    dt = dt or self.datas[0].datetime.date(0)
    print('%s, %s' % (dt.isoformat(), txt))

def __init__(self):
    # Keep a reference to the "close" line in the data[0] dataseries
    self.dataclose = self.datas[0].close

def next(self):
    # Simply log the closing price of the series from the reference
    self.log('Close, %.2f' % self.dataclose[0])

if __name__ == '__main__':
   cerebro = bt.Cerebro()
   cerebro.addstrategy(TestStrategy)

#Data feed block
data_path = "/Users/kumarun/Documents/data/files"
joined_files = os.path.join(data_path, "Oct-MONTHLY-Expirydata_2020.csv")
joined_list = glob.glob(joined_files)
df = pd.concat(map(pd.read_csv, joined_list), ignore_index=True)
df.columns=['Ticker','date', 'open', 'high', 'low', 'close', 'volume','Open Interest']
filtered = df[(df['Ticker'] == 'BANKNIFTY')]
#Cerebro block
filtered.date = pd.to_datetime(filtered.date, format='%d-%m-%Y %H:%M:%S')
feed = bt.feeds.PandasData(dataname=filtered)
cerebro.adddata(feed)
cerebro.broker.setcash(100000.0)

print('Starting Portfolio Value: %.2f' % cerebro.broker.getvalue())

cerebro.run()

print('Final Portfolio Value: %.2f' % cerebro.broker.getvalue())'''

The data format is as below

![alt text]( image url

Thanks for the help