google sheet API Request had insufficient authentication scopes – Ubuntu

I’m trying to follow the Google Sheet API from its documentation here:
https://developers.google.com/sheets/api/guides/values

I’m trying to run the snippets of the codes mentioned there, for example, Python code on Reading a single range

Here is an example of a snippet of code that I ran, sheets_get_values.py

from __future__ import print_function

import google.auth
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError


def get_values(spreadsheet_id, range_name):
    creds, _ = google.auth.default()
    try:
        service = build('sheets', 'v4', credentials=creds)

        result = service.spreadsheets().values().get(
            spreadsheetId=spreadsheet_id, range=range_name).execute()
        rows = result.get('values', [])
        print(f"{len(rows)} rows retrieved")
        return result
    except HttpError as error:
        print(f"An error occurred: {error}")
        return error


if __name__ == '__main__':
    get_values("1CM29gwKIzeXsAppeNwrc8lbYaVMmUclprLuLYuHog4k", "A1:C2")

python3 sheets_get_values.py

But I got this message:

An error occurred: <HttpError 403 when requesting https://sheets.googleapis.com/v4/spreadsheets/1CM29gwKIzeXsAppeNwrc8lbYaVMmUclprLuLYuHog4k/values/A1%3AC2?alt=json returned "Request had insufficient authentication scopes.". Details: "[{'@type': 'type.googleapis.com/google.rpc.ErrorInfo', 'reason': 'ACCESS_TOKEN_SCOPE_INSUFFICIENT', 'domain': 'googleapis.com', 'metadata': {'method': 'google.apps.sheets.v4.SpreadsheetsService.GetValues', 'service': 'sheets.googleapis.com'}}]">

I have tried to set the GOOGLE_APPLICATION_CREDENTIALS environment:

export GOOGLE_APPLICATION_CREDENTIALS='/home/myUser/.config/gcloud/application_default_credentials.json'

I also already enable application default credentials:

gcloud auth application-default login

gcloud config set project project_name

I also try to solve this by following a few instructions related to Request had insufficient authentication scopes by Googling, for example this one

I try to modify the default snippet of code by Google documentation be like this:

SCOPES = [
    'https://www.googleapis.com/auth/drive',
    'https://www.googleapis.com/auth/drive.file',
    'https://www.googleapis.com/auth/spreadsheets',
]

def append_values(spreadsheet_id, range_name, value_input_option,
                  _values):
    creds, _ = google.auth.default(scopes=SCOPES)
    ...
    ...

But the error still appear when I ran the snippet of the code.

So, what should I do to solve this error?