Traceback (most recent call last):
  File "electrum\daemon.py", line 515, in _run
  File "aiorpcx\curio.py", line 297, in __aexit__
  File "electrum\util.py", line 1258, in join
  File "electrum\daemon.py", line 278, in run
  File "aiohttp\web_runner.py", line 121, in start
  File "asyncio\base_events.py", line 1506, in create_server
OSError: [Errno 10048] error while attempting to bind on address ('127.0.0.1', 54321): 通常每个套接字地址(协议/网络地址/端口)只允许使用一次。