Access Denied while running Python script from SQL Server

Hi,
I am tring to execute the below query and getting error as Access denied,
Can you please help me to fix this error.

DECLARE @PATH NVARCHAR(4000) = 'D:\SAP_Download\TPM_MATERIAL_MASTER_20191209_101848.txt'

DECLARE @CMDSQL NVARCHAR(4000) = 'Cmd.exe /S /C " "D:\SAP_Download\BatchFile.bat" "D:\SAP_Download\TPM_MATERIAL_MASTER_20191209_101848.txt""'

Exec master..xp_cmdshell @CMDSQL

In .bat file the below code
@ECHO OFF
SET "fileName=%1"

"C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\python.exe" "D:\SAP_Download\convertFileFormat.py" %fileName%

And in python file,
import time
import sys
import codecs
import os
myfile = codecs.open(sys.argv[1], encoding='utf-8')
marylines = myfile.readlines()
myfile1 = codecs.open(sys.argv[1], 'w', encoding='utf-16')
for line in marylines:
myfile1.write(line)
myfile1.close()
myfile.close()

Start with the xp_cmdshell invocation and BatchFile.bat, then inspect convertFileFormat.py and the Python executable path. Reproduce the command under the SQL Server service account and determine which step returns Access denied; no repository test or acceptance criterion is provided.