No audio and blank GUI when attempting to play music.

Windows 10 Pro x64: 1709
Plex server: Version 1.10.1.4602

As the title describes: whenever I attempt to play any music I get the image below.

Logs indicate nothing apart from:

Dec 19 11:20:25: client: [0] opened from 127.0.0.1:17673
Dec 19 11:27:51: client: [0] opened from 127.0.0.1:17989
Dec 19 11:30:58: client: [0] opened from 127.0.0.1:18059

might actually be the same issue as this one:

It could well be. I’m using CloudFlare in front of my server.

Yeah, might be a DNS/cert thing. Logs might show errors.