Warnning Message (SocketException)

Hi,

I found a message while checking the Mongos log.

Can you tell me what this message means?

log:
2020-07-23T05:35:47 W NETWORK [listener] Error accepting new connection SocketException: remote_endpoint: Transport endpoint is not connected

Mongo Version: 4.2.6
configuration(5 Servers):
4 shards (replica set)
5 mognos
3 config