How to mitigate Object reference not set to an instance of an object?

Hi all,

I’m using the following code to clear an excel file before processing:
from openpyxl import load_workbook

#clear wb contents

wb = load_workbook(r"C:\Users\Max12\Desktop\xml\pdfminer\UiPath\attachments\75090058\UI3.xlsx")

target = wb['Sheet1']



ss_sheet = wb['Sheet1 Copy']

ss_sheet.title = 'Sheet1'"C:\Users\Max12\Desktop\xml\pdfminer\UiPath\attachments\75090058\UI3.xlsx")

However, when doing a write range consequently on this excel file I’m getting an error " Object reference not set to an instance of an object "?
What can I do to mtiigate this?

Please help!

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