Log errors

I’m getting a lot of errors in my log file. here are a few. anybody have any ideas of what could be wrong?

017-11-23 11:17:36 WARNING (Thread-27) [pychromecast.socket_client] Heartbeat timeout, resetting connection
2017-11-23 11:32:54 ERROR (MainThread) [homeassistant.core] Error doing job: Fatal read error on socket transport
Traceback (most recent call last):
File “/usr/lib/python3.5/asyncio/selector_events.py”, line 723, in _read_ready
data = self._sock.recv(self.max_size)
TimeoutError: [Errno 110] Connection timed out