Hi Kaniz, 

Thank you for your reply. 

I have been looking more into the error, and apparently the reason why the file cannot be loaded is due to an error that pops up when I open the excel sheet "One or more invalid names were detected in this workbook. those invalid names have been changed to #REF!# ". When I want to save the excel file, it says the error is found in cells with functions like: "=IF(B9="n.a";"string";IF(COUNTIF(@E9:E10;"NO")=0;"YES";"NO"))". When I remove the @ symbol in these cells, I am able to read the file. 

I tried the following code: 

import pandas as pd
df = pd.read_excel(file_path, sheet_name='sheet_name', engine='xlrd', convert_float=False, dtype='str', errors='coerce'), but this resulted in the error "read_excel() got an unexpected keyword argument 'errors'".