Error google API: "Credentials in post body and basic Authorization header do not match"

I've implemented a python script that connect to google drive and download my files. For the authorization, I've followed the quickstart guide and code sample on google site.

The problem is this: when I give my authorization for the first time, a token.pickle is generated, but after time (not much, maybe less than 1 hour) i receive this error:

google.auth.exceptions.RefreshError: ('invalid_request: Credentials in post body and basic Authorization header do not match', '{\n "error": "invalid_request",\n "error_description": "Credentials in post body and basic Authorization header do not match"\n}')

If I delete the token.pickle and do the authorization again from browser all works again, but obviously I need a token valid for a longer time.

The code for authorization is this:

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

def main():
    """Shows basic usage of the Drive v3 API.
    Prints the names and ids of the first 10 files the user has access to.
    """

    creds = None
    # The file token.pickle stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
    if os.path.exists('token.pickle'):
        with open('token.pickle', 'rb') as token:
            creds = pickle.load(token)
    # If there are no (valid) credentials available, let the user log in.
    if not creds or not creds.valid:
        if creds and creds.expired and creds.refresh_token:
            creds.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file(
                'credentials.json', SCOPES)
            creds = flow.run_local_server(port=0)
        # Save the credentials for the next run
        with open('token.pickle', 'wb') as token:
            pickle.dump(creds, token)

    service = build('drive', 'v3', credentials=creds)

Thanks