Tracker stoped sending data

I have few devices sending data to the server, only one device is showing offline. it was working good until last night.

please see the tracer server log

2018-02-05 08:13:12 DEBUG: [A034C4BB: 5013 < 37.186.43.165] HEX: 2a48512c3335353438383032303739343030362c56312c3035313331322c412c323531382e38363938342c4e2c30353132342e31333938372c452c31392e34352c3139382c3035303231382c4646464646464646230d0a
2018-02-05 08:13:12  INFO: [A034C4BB] id: 355488020794006, time: 2018-02-05 08:13:12, lat: 25.31450, lon: 51.40233, speed: 19.5, course: 198.0
2018-02-05 08:13:22 DEBUG: [A034C4BB: 5013 < 37.186.43.165] HEX: 2a48512c3335353438383032303739343030362c56312c3035313332322c412c323531382e38343739342c4e2c30353132342e31313935312c452c382e34332c3239302c3035303231382c4646464646464646230d0a
2018-02-05 08:13:22  INFO: [A034C4BB] id: 355488020794006, time: 2018-02-05 08:13:22, lat: 25.31413, lon: 51.40199, speed: 8.4, course: 290.0
2018-02-05 08:13:32 DEBUG: [A034C4BB: 5013 < 37.186.43.165] HEX: 2a48512c3335353438383032303739343030362c56312c3035313333322c412c323531382e38363436312c4e2c30353132342e30373139352c452c31362e33382c3238382c3035303231382c4646464646464646230d0a
2018-02-05 08:13:32  INFO: [A034C4BB] id: 355488020794006, time: 2018-02-05 08:13:32, lat: 25.31441, lon: 51.40120, speed: 16.4, course: 288.0
2018-02-05 08:13:42 DEBUG: [A034C4BB: 5013 < 37.186.43.165] HEX: 2a48512c3335353438383032303739343030362c56312c3035313334322c412c323531382e38373035392c4e2c30353132342e30353031352c452c332e37372c3238352c3035303231382c4646464646464646230d0a
2018-02-05 08:13:42  INFO: [A034C4BB] id: 355488020794006, time: 2018-02-05 08:13:42, lat: 25.31451, lon: 51.40084, speed: 3.8, course: 285.0
2018-02-05 08:13:52 DEBUG: [A034C4BB: 5013 < 37.186.43.165] HEX: 2a48512c3335353438383032303739343030362c56312c3035313335322c412c323531382e38373437302c4e2c30353132342e30333932332c452c332e30362c3239302c3035303231382c4646464646464646230d0a
2018-02-05 08:13:52  INFO: [A034C4BB] id: 355488020794006, time: 2018-02-05 08:13:52, lat: 25.31458, lon: 51.40065, speed: 3.1, course: 290.0
2018-02-05 08:14:02 DEBUG: [A034C4BB: 5013 < 37.186.43.165] HEX: 2a48512c3335353438383032303739343030362c56312c3035313430322c412c323531382e38373931342c4e2c30353132342e30323936372c452c332e33302c3239382c3035303231382c4646464646464646230d0a
2018-02-05 08:14:02  INFO: [A034C4BB] id: 355488020794006, time: 2018-02-05 08:14:02, lat: 25.31465, lon: 51.40049, speed: 3.3, course: 298.0
2018-02-05 08:14:12  WARN: [A034C4BB] error - An existing connection was forcibly closed by the remote host - IOException (...)
2018-02-05 08:14:12  INFO: [A034C4BB] disconnected

Please help me on this regard

The error from your log means that device closed connection, so the issue seems to be on the device side.

Sir, My port 5013 is not keeping open always

will the port close if no data is received ?

my port is open few hours then it will close few hours and then again open ... like that ?

please suggest fix
Thank You

Why would it be closed? Traccar always listens to ports.

No Idea, it keep open and close ( only port 5013 is having this issue )

All ports except 5013 is open always without any issue

Well, I don't think it's Traccar issue. Possible you have some network problem.

ok sir