运行demo_v3，在.close运行报错
Exception in callback Future.set_result()
handle: <Handle Future.set_result()>
Traceback (most recent call last):
File "C:\Users\a\AppData\Local\Programs\Python\Python313\Lib\asyncio\events.py", line 89, in _run
self._context.run(self._callback, *self._args)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
asyncio.exceptions.InvalidStateError: invalid state
运行demo_v3，在.close运行报错
Exception in callback Future.set_result()
handle: <Handle Future.set_result()>
Traceback (most recent call last):
File "C:\Users\a\AppData\Local\Programs\Python\Python313\Lib\asyncio\events.py", line 89, in _run
self._context.run(self._callback, *self._args)
~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
asyncio.exceptions.InvalidStateError: invalid state