Discord.py：如何修复“事件循环已关闭”

Question

新手上路，请多包涵

我是编程新手。我试图让我的 discord 机器人打开命令提示符以确认它可以运行，但我收到此错误：

   File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\proactor_events.py", line 116, in __del__
    self.close()
  File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\proactor_events.py", line 108, in close
    self._loop.call_soon(self._call_connection_lost, None)
  File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\base_events.py", line 719, in call_soon
    self._check_closed()
  File "C:\Users\---\AppData\Local\Programs\Python\Python38-32\lib\asyncio\base_events.py", line 508, in _check_closed
    raise RuntimeError('Event loop is closed')
RuntimeError: Event loop is closed
[Finished in 0.871s]

代码：

 import discord
from discord.ext import commands

client=commands.Bot(command_prefix = '.')

@client.event
async def on_ready():
    print('ok')

client.run(token)

是什么原因导致此错误，我该如何解决？

编辑：经过一些测试，我相信“client.run(token)”是导致“事件循环关闭”的原因，不知道为什么。