Getting error: UnicodeDecodeError: 'utf-8' codec can't decode byte 0x80 in position 3131: invalid start byte [duplicate]

Question

I am writing a command to join files on macbook M1 using Jupyter notebook, but I have a problem when joining CVS files in the following command. I will post the full code:

import pandas as pd
import os 
files = [file for file in os.listdir("/Users/tadinhkhanh/Downloads/Training Python/Data Science/Tut Training Data Science (Youtube - Keith Galli) (Python + Numpy)/SalesAnalysis/Sales_Data")]
all_months_data = pd.DataFrame()
for file in files:
    df = pd.read_csv("/Users/tadinhkhanh/Downloads/Training Python/Data Science/Tut Training Data Science (Youtube - Keith Galli) (Python + Numpy)/SalesAnalysis/Sales_Data/"+file)
    all_months_data = pd.concat([all_months_data, df])
all_months_data.head()