ConnectionRefusedError: [Errno 111] Connection refused

[hadoanngoc]

When creating a tunnel, it shows this error

ConnectionRefusedError: [Errno 111] Connection refused

Here are the detailed logs

Traceback (most recent call last):
File "/usr/lib/python3.10/urllib/request.py", line 1348, in do_open
h.request(req.get_method(), req.selector, req.data, headers,
File "/usr/lib/python3.10/http/client.py", line 1283, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib/python3.10/http/client.py", line 1329, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib/python3.10/http/client.py", line 1278, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib/python3.10/http/client.py", line 1038, in _send_output
self.send(msg)
File "/usr/lib/python3.10/http/client.py", line 976, in send
self.connect()
File "/usr/lib/python3.10/http/client.py", line 942, in connect
self.sock = self._create_connection(
File "/usr/lib/python3.10/socket.py", line 845, in create_connection
raise err
File "/usr/lib/python3.10/socket.py", line 833, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/var/www/sirtunnel/sirtunnel.py", line 34, in
request.urlopen(req, body)
File "/usr/lib/python3.10/urllib/request.py", line 216, in urlopen
return opener.open(url, data, timeout)
File "/usr/lib/python3.10/urllib/request.py", line 519, in open
response = self._open(req, data)
File "/usr/lib/python3.10/urllib/request.py", line 536, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
File "/usr/lib/python3.10/urllib/request.py", line 496, in _call_chain
result = func(*args)
File "/usr/lib/python3.10/urllib/request.py", line 1377, in http_open
return self.do_open(http.client.HTTPConnection, req)
File "/usr/lib/python3.10/urllib/request.py", line 1351, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [Errno 111] Connection refused>

Here are the logs after running run_server.sh

2024/05/04 05:10:54.647 INFO using provided configuration {"config_file": "caddy_config.json", "config_adapter": ""}
2024/05/04 05:10:54.647 INFO admin admin endpoint started {"address": "tcp/localhost:2019", "enforce_origin": false, "origins": ["localhost:2019", "[::1]:2019", "127.0.0.1:2019"]}
2024/05/04 05:10:54.647 INFO http server is listening only on the HTTPS port but has no TLS connection policies; adding one to enable TLS {"server_name": "sirtunnel", "https_port": 443}
2024/05/04 05:10:54.647 INFO http enabling automatic HTTP->HTTPS redirect{"server_name": "sirtunnel"}
run: loading initial config: loading new config: http app module: start: tcp: listening on :443: listen tcp :443: bind: address already in use

Can you help?