Swimbot Error

Traceback (most recent call last):
  File "C:\Users\wmiller\AppData\Local\Programs\Python\Python39\lib\asyncio\tasks.py", line 487, in wait_for
    fut.result()
asyncio.exceptions.CancelledError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\Users\wmiller\Desktop\Swimbot\whois.py", line 422, in whois
    rxn, user = await self.bot.wait_for('reaction_add', timeout=15, check=check_user)
  File "C:\Users\wmiller\AppData\Local\Programs\Python\Python39\lib\asyncio\tasks.py", line 489, in wait_for
    raise exceptions.TimeoutError() from exc
asyncio.exceptions.TimeoutError

During handling of the above exception, another exception occurred:

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\whois.py", line 438, in whois
    await message.clear_reactions()
  File "C:\Users\wmiller\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\message.py", line 1096, in clear_reactions
    await self._state.http.clear_reactions(self.channel.id, self.id)
  File "C:\Users\wmiller\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\http.py", line 243, in request
    raise NotFound(r, data)
discord.errors.NotFound: 404 Not Found (error code: 10008): Unknown Message