Same issue with Vizio and Plex
Vizio TV model M602i-B3
Plex server installed in FreeBSD jail
Plex Media Server v1.18.6.2368-97add474d - FreeBSD PC amd64 - build: freebsd-x86_64 freebsd
FreeBSD version: 11.3-RELEASE-p5, language: en-US
I tried fresh install in new jails two times already and behavior is the same
Tried newer PlexMediaServer-1.18.7.2415-9930aef45-FreeBSD-amd64 as well – still the same
the last log entries before silent crash of Plex_Media_Server process
Feb 15, 2020 20:29:38.918 [0x80c9e5f00] DEBUG - Auth: authenticated user 7909264 as VISIO TV
Feb 15, 2020 20:29:38.918 [0x812658300] DEBUG - Request: [xxx.xxx.xxx.xxx:xxxxx 1 (Subnet)] GET / (9 live) GZIP Signed-in Token (VISIO TV)
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Accept => text/plain, */*; q=0.01
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Accept-Encoding => gzip, deflate
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Accept-Language => en
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Connection => Keep-Alive
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Host => xxx.xxx.xxx.xxx:xxxxx
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Origin => http://plex.tv
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * Referer => http://plex.tv/web/tv/vizio
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * User-Agent => Opera/9.80 (Linux armv7l) Presto/2.12.362 Version/12.11
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Client-Identifier => jba5v4dgjkc
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Device-Screen-Resolution => 1280x720
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-No-Cache => 1581827378304291
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Platform => Vizio Presto
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Platform-Version => 0
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Product => Plex for Vizio
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Token => xxxxxxxxxxxxxxxxxxxx
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Version => 3.13.13
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-No-Cache => 1581827378304291
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Client-Identifier => jba5v4dgjkc
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Device-Screen-Resolution => 1280x720
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Version => 3.13.13
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Product => Plex for Vizio
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Platform => Vizio Presto
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Platform-Version => 0
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - * X-Plex-Token => xxxxxxxxxxxxxxxxxxxx
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - Auth: tokens were refreshed recently enough
Feb 15, 2020 20:29:38.918 [0x812658300] DEBUG - (Capabilities) Platform 'Vizio Presto' not matched by plugin platform requirements
Feb 15, 2020 20:29:38.918 [0x812658300] VERBOSE - It took 0.0 sec to serialize a list with 27 elements.
Feb 15, 2020 20:29:38.918 [0x80c9e5f00] DEBUG - Completed: [xxx.xxx.xxx.xxx:xxxxx] 200 GET / (9 live) GZIP 0ms 3510 bytes (pipelined: 1)
Feb 15, 2020 20:29:38.954 [0x80c9e5f00] VERBOSE - WebSocket: processed 1 frame(s)