如何从生成器对象获取信息

Question

next（）在抛出此错误时不起作用

Future exception was never retrieved
future: <Future finished exception=ServerDisconnectedError()>
aiohttp.errors.ServerDisconnectedError

我以前从未将生成器对象与async一起使用过，请原谅我的无能

@client.event
async def on_message(message):
  if message.content.startswith('retrieve_'):
    await client.send_message(message.channel, next(client.get_message(message.channel,str(-2))))