Command raised an exception: ZeroConnectedNodes: about music-discord-bot HOT 3 OPEN

Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 969, in _wrap_create_connection
return await self._loop.create_connection(*args, **kwargs) # type: ignore # noqa
File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1065, in create_connection
raise exceptions[0]
File "/usr/local/lib/python3.9/asyncio/base_events.py", line 1050, in create_connection
sock = await self._connect_sock(
File "/usr/local/lib/python3.9/asyncio/base_events.py", line 961, in _connect_sock
await self.sock_connect(sock, address)
File "/usr/local/lib/python3.9/asyncio/selector_events.py", line 499, in sock_connect
return await fut
File "/usr/local/lib/python3.9/asyncio/selector_events.py", line 534, in _sock_connect_cb
raise OSError(err, f'Connect call failed {address}')
ConnectionRefusedError: [Errno 111] Connect call failed ('172.19.0.3', 2333)
The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/wavelink/websocket.py", line 76, in _connect
self._websocket = await self._node.session.ws_connect(uri, headers=self.headers, heartbeat=self._node.heartbeat)
File "/usr/local/lib/python3.9/site-packages/aiohttp/client.py", line 754, in _ws_connect
resp = await self.request(
File "/usr/local/lib/python3.9/site-packages/aiohttp/client.py", line 520, in _request
conn = await self._connector.connect(
File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 535, in connect
proto = await self._create_connection(req, traces, timeout)
File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 892, in _create_connection
_, proto = await self._create_direct_connection(req, traces, timeout)
File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 1051, in _create_direct_connection
raise last_exc
File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 1020, in _create_direct_connection
transp, proto = await self._wrap_create_connection(
File "/usr/local/lib/python3.9/site-packages/aiohttp/connector.py", line 975, in _wrap_create_connection
raise client_error(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host lavalink:2333 ssl:default [Connect call failed ('172.19.0.3', 2333)]