Station could not Starting new HTTPS connection (1): network.satnogs.org:443

Hi,
After all settings of satnogs client my antenna could not be able to track satellite through satnogs network.
I f someone can help to fixe issue it will be great.
here is an output of journalctl -u satnogs-client

satnogsclient.scheduler.tasks - INFO - Trying to GET observation jobs from the network
juin 02 14:54:18 hostname satnogs-client[508]: urllib3.connectionpool - DEBUG - Starting new HTTPS connection (1): network.satnogs.org:443
juin 02 14:54:18 hostname satnogs-client[508]: apscheduler.executors.default - ERROR - Job “get_jobs (trigger: interval[0:01:00], next run at: 2021-06-02 12:55:18 UTC)”
juin 02 14:54:18 hostname satnogs-client[508]: Traceback (most recent call last):
juin 02 14:54:18 hostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/connection.py”, line 160, in _new_conn
juin 02 14:54:18 hostname satnogs-client[508]: (self._dns_host, self.port), self.timeout, **extra_kw
juin 02 14:54:18 chostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/util/connection.py”, line 61, in create_connection
juin 02 14:54:18 hostname satnogs-client[508]: for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
juin 02 14:54:18hostname satnogs-client[508]: File “/usr/lib/python3.7/socket.py”, line 748, in getaddrinfo
juin 02 14:54:18 hostname satnogs-client[508]: for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
juin 02 14:54:18 hostname satnogs-client[508]: socket.gaierror: [Errno -2] Name or service not known
juin 02 14:54:18 hostname satnogs-client[508]: During handling of the above exception, another exception occurred:
juin 02 14:54:18 hostname satnogs-client[508]: Traceback (most recent call last):
juin 02 14:54:18 hostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/connectionpool.py”, line 677, in urlopen
juin 02 14:54:18 hostname satnogs-client[508]: chunked=chunked,
juin 02 14:54:18 hostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/connectionpool.py”, line 381, in _make_request
juin 02 14:54:18 chostname satnogs-client[508]: self._validate_conn(conn)
juin 02 14:54:18 hostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/connectionpool.py”, line 978, in _validate_conn
juin 02 14:54:18 hostname satnogs-client[508]: conn.connect()
juin 02 14:54:18 hostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/connection.py”, line 309, in connect
juin 02 14:54:18 hostname satnogs-client[508]: conn = self._new_conn()
juin 02 14:54:18 hostname satnogs-client[508]: File “/var/lib/satnogs/lib/python3.7/site-packages/urllib3/connection.py”, line 172, in _new_conn
juin 02 14:54:18 hostname satnogs-client[508]: self, “Failed to establish a new connection: %s” % e
juin 02 14:54:18 hostname satnogs-client[508]: urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPSConnection object at 0x7f5de1bd3a20>: Failed to establish
juin 02 14:54:18 hostname satnogs-client[508]: During handling of the above exception, another exception occurred:

Silla.