Can't connect to my media server from LG UH950V on same network
I have installed plex media server (version 22.214.171.1243) on my MacBook (macOs Sierra 10.12.5). Also I have plex application on my LG UH950V (webOS version 04.30.95, plex version 3.8.0). Both laptop and TV are on same network and subnet.
Problem I have is that TV can't connect to my media server. Message I'm getting is "MacOS is offline or unreachable". IP address printed on same screen matches to the address of my laptop. Also I see TV in "devices" tab when using plex web app from my laptop.
I have also tried to connect server from my iPhone and windows laptop on same network and it worked fine from both of them which I believe rules out firewall or antivirus interference.
Any ideas on how to resolve this? I'm attaching my Plex server logs (debug logging is enabled, verbose logging is disabled).