Stopped to connect via SSH

[Ikif]

I have HA on RP4 which trys to connect to RP3 with LibreELEC. Several month before it worked properly.

Logger: homeassistant.components.sensor
Source: custom_components/ssh/sensor.py:136
Integration: Сенсор (documentation, issues)
First occurred: 20:30:53 (1 occurrences)
Last logged: 20:30:53

Error while setting up ssh platform for sensor
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 249, in _async_setup_platform
await asyncio.shield(task)
File "/usr/local/lib/python3.9/asyncio/coroutines.py", line 124, in coro
res = func(*args, **kw)
File "/config/custom_components/ssh/sensor.py", line 48, in async_setup_platform
dev.append(SSHSensor(hass, config))
File "/config/custom_components/ssh/sensor.py", line 66, in init
self._connect()
File "/config/custom_components/ssh/sensor.py", line 136, in _connect
self._ssh.login(self._host, self._username,
File "/usr/local/lib/python3.9/site-packages/pexpect/pxssh.py", line 386, in login
raise ExceptionPxssh('Could not establish connection to host')
pexpect.pxssh.ExceptionPxssh: Could not establish connection to host