Plexamp on Headless Pi Issue

[KarlMcC]

Hi

I’m trying to get Plexamp up & running on a Raspberry Pi Zero W with a JustBoom Digi hat for digital audio output and have got it configured as per these guidelines -

Plexamp for Raspberry Pi Release Notes

Plexamp for Raspberry Pi v2.0 beta 2 We’re pleased to announce the next release of Plexamp for Raspberry Pi, with massive internal changes and improvements. The audio engine inside is the exact same upgraded piece of awesome which powers our iOS and Android apps. Overall, the biggest changes: Support for TIDAL and podcasts. Lower memory usage. Much faster startup of playback in many cases. Much faster seeking/track skipping (in many cases instant). Pre-buffering of next track. Improved sweet F…

The service appears to be running OK on the Pi and is available as a player in the Windows Plex app. It connects when I select it from the Windows app but when I play any music file I get the following error -

May 07 14:28:29 raspberrypi node[621]: debug: PlayQueue: Play queue: 14757,14758
May 07 14:28:29 raspberrypi node[621]: debug: PlayQueue: Audio queue:
May 07 14:28:29 raspberrypi node[621]: debug: PlayQueue: Adding both current and next track.
May 07 14:28:29 raspberrypi node[621]: debug: PlayQueue: Stop.
May 07 14:28:29 raspberrypi node[621]: debug: PlayQueue: no offset for track.
May 07 14:28:29 raspberrypi node[621]: debug: PlayQueue: Adding track 14757 to audio player (gapless: true).
May 07 14:28:29 raspberrypi node[621]: error: Got exception playing media: Cannot read property ‘substr’ of undefined
May 07 14:28:29 raspberrypi node[621]: error: TypeError: Cannot read property ‘substr’ of undefined
May 07 14:28:29 raspberrypi node[621]: at Function.BuildPlexHostname (/home/pi/plexamp/server/server.prod.js:1:2953)
May 07 14:28:29 raspberrypi node[621]: at /home/pi/plexamp/server/server.prod.js:1:736720
May 07 14:28:29 raspberrypi node[621]: at Array.map ()
May 07 14:28:29 raspberrypi node[621]: at /home/pi/plexamp/server/server.prod.js:1:736662
May 07 14:28:29 raspberrypi node[621]: at Generator.next ()
May 07 14:28:29 raspberrypi node[621]: at r (/home/pi/plexamp/server/server.prod.js:1:731025)
May 07 14:28:29 raspberrypi node[621]: at /home/pi/plexamp/server/server.prod.js:1:731119
May 07 14:28:29 raspberrypi node[621]: at
May 07 14:28:29 raspberrypi node[621]: at process._tickCallback (internal/process/next_tick.js:182:7)

Is there something I’ve overlooked?

Server - Synology NAS Plex ver 1.19.2.2737
Client - Plex for Windows ver1.9.0.1203-00f2b4d9
Plexamp Pi - Raspbian Buster Desktop February 2020 (started with Lite and got same error rebuilt with Desktop in case there was a dependency I wasn’t aware of)

[OttoKerner]

Did you read the last post in that release notes thread?

[KarlMcC]

Yes, as I said I followed the instructions therefore I’ve got node v9.11.2 running. Is that what you’re referring to or have I overlooked something else?

[OttoKerner]

If you followed all of these, then I have no idea. It might just be that it won’t work on a Pi zero.

[KarlMcC]

I should have thought of that, I’d seen Pi Zero mentioned in other Plexamp threads and assumed it worked. Just put the SD card in an old Pi 3 I’ve got and it’s working. Likely beyond my capabilities to work out why it doesn’t work on the Zero.

[OttoKerner]

My assumption (but please don’t quote me on this ): I think the Zero has a slightly different cpu and therefore needs at least binaries compiled for a different “target” (if that makes sense).