Swimbot Error

Traceback (most recent call last):
  File "C:\Users\wmiller\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "c:\Users\wmiller\Desktop\Swimbot\general.py", line 40, in mock
    sentence = f"> {ret} \n -{user.nick}, {message.created_at.strftime(('%Y-%m-%dT%H:%M:%S%z'), '%Y-%m-%dT')}"
TypeError: strftime() takes at most 1 argument (2 given)