Plex media server- setup failed

Plex media server- setup failed,i have tried countless times to setup a server and all i keep getting is set up failed,it was working fine for months ,then one day it went wrong and i did all the usual things i do to fix it, but this time it wouldn’t fix it so i uninstalled it all deleted it, then re-downloaded installed as ive done this a few times and its usually ok ,but this time i keep getting this problem ..nvidia shield…anyone?

On what particular model and OS/system version are you experiencing this?

nvidia shield tv version 11…

SHIELD Android TV sw Version 9.1.1(33.2.0.157)