Plex Firefox playback error

Plex Players Desktop Players
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1

Hey,

Im getting the following error:

plexerror
plexerror1041×480 267 KB

This happens when the song finishes and the next one is supposed to be loaded or when i skip a song manually. The player crashes but the song keeps playing in the background without any control. All songs can be started individually just the auto-loader of the next song flips out in Firefox.
I only get this in Firefox browser on all my clients. Chrome is fine, my LG-Tv app is fine.
I only get this error when playing music, when i skip a video to the next episode everything is fine.
All my media files are located on the same harddrive on my ubuntu 20.04 server.
The rights of the files are chmod 774 and the plex user is part of the group.

Here is a list of my firefox extensions: (i disabled ublock for the plex page for testing purposes)

plexerror2
plexerror2794×630 35.1 KB

I also cleared my cache, restarted computer, nothing…

my log:

Mar 11, 2021 18:24:19.335 [0x7fe1abfff700] Debug — WebSocket: Performing handshake from origin https://app.plex.tv
Mar 11, 2021 18:24:19.335 [0x7fe1abfff700] Debug — Beginning read from WebSocket
Mar 11, 2021 18:24:19.345 [0x7fe1c2d49700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:19.345 [0x7fe14d7fa700] Debug — Request: [192.168.120.121:52139 (Subnet)] GET /activities (13 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:19.346 [0x7fe1c2d49700] Debug — Completed: [192.168.120.121:52139] 200 GET /activities (13 live) TLS GZIP 0ms 429 bytes (pipelined: 3)
Mar 11, 2021 18:24:22.448 [0x7fe1c354a700] Debug — Completed: [192.168.120.121:52111] 200 GET /player/proxy/poll?deviceClass=pc&protocolVersion=3&protocolCapabilities=timeline%2Cplayback%2Cnavigation%2Cmirror%2Cplayqueues&timeout=1 (13 live) TLS GZIP 20000ms 5 bytes (pipelined: 1)
Mar 11, 2021 18:24:25.791 [0x7fe1c2d49700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.791 [0x7fe1abfff700] Debug — Request: [192.168.120.121:52139 (Subnet)] GET /media/providers (12 live) TLS GZIP Signed-in Token me@hotmail.com)
Mar 11, 2021 18:24:25.796 [0x7fe1c354a700] Debug — Completed: [192.168.120.121:52139] 200 GET /media/providers (12 live) TLS GZIP 4ms 4702 bytes (pipelined: 4)
Mar 11, 2021 18:24:25.833 [0x7fe1c354a700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.833 [0x7fe1c2d49700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.833 [0x7fe14d7fa700] Debug — Request: [192.168.120.121:52139 (Subnet)] GET /:/prefs (12 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:25.833 [0x7fe1717fa700] Debug — Request: [192.168.120.121:52142 (Subnet)] GET /updater/status (12 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:25.834 [0x7fe1c354a700] Debug — Completed: [192.168.120.121:52142] 200 GET /updater/status (12 live) TLS GZIP 0ms 519 bytes (pipelined: 2)
Mar 11, 2021 18:24:25.840 [0x7fe1c2d49700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.841 [0x7fe14d7fa700] Debug — Request: [192.168.120.121:52142 (Subnet)] GET /status/sessions (13 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:25.841 [0x7fe14d7fa700] Debug — [Now] Adding 0 sessions.
Mar 11, 2021 18:24:25.842 [0x7fe1c2d49700] Debug — Completed: [192.168.120.121:52139] 200 GET /:/prefs (13 live) TLS GZIP 8ms 8225 bytes (pipelined: 5)
Mar 11, 2021 18:24:25.842 [0x7fe1c2d49700] Debug — Completed: [192.168.120.121:52142] 200 GET /status/sessions (13 live) TLS GZIP 1ms 429 bytes (pipelined: 3)
Mar 11, 2021 18:24:25.843 [0x7fe1c354a700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.843 [0x7fe1717fa700] Debug — Request: [192.168.120.121:52146 (Subnet)] GET /:/websockets/notifications (13 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:25.844 [0x7fe1717fa700] Debug — WebSocket: Performing handshake from origin https://app.plex.tv
Mar 11, 2021 18:24:25.844 [0x7fe1717fa700] Debug — Beginning read from WebSocket
Mar 11, 2021 18:24:25.853 [0x7fe1c354a700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.853 [0x7fe14d7fa700] Debug — Request: [192.168.120.121:52139 (Subnet)] PUT /updater/check?download=0 (13 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:25.853 [0x7fe14d7fa700] Debug — AutoUpdate: requesting check endpoint: /updater/products/5/check.xml?build=linux-x86_64&channel=16&distribution=debian&version=1.22.0.4163-d8c4875dd, download: NO
Mar 11, 2021 18:24:25.853 [0x7fe14d7fa700] Debug — Downloading document https://plex.tv/updater/products/5/check.xml?build=linux-x86_64&channel=16&distribution=debian&version=1.22.0.4163-d8c4875dd
Mar 11, 2021 18:24:25.853 [0x7fe14d7fa700] Debug — HTTP requesting GET https://plex.tv/updater/products/5/check.xml?build=linux-x86_64&channel=16&distribution=debian&version=1.22.0.4163-d8c4875dd
Mar 11, 2021 18:24:25.881 [0x7fe1c2d49700] Debug — Auth: authenticated user 1 as me@hotmail.com
Mar 11, 2021 18:24:25.881 [0x7fe1abfff700] Debug — Request: [192.168.120.121:52142 (Subnet)] GET /activities (13 live) TLS GZIP Signed-in Token (me@hotmail.com)
Mar 11, 2021 18:24:25.882 [0x7fe1c354a700] Debug — Completed: [192.168.120.121:52142] 200 GET /activities (13 live) TLS GZIP 0ms 429 bytes (pipelined: 4)
Mar 11, 2021 18:24:26.017 [0x7fe14d7fa700] Debug — HTTP 200 response from GET https://plex.tv/updater/products/5/check.xml?build=linux-x86_64&channel=16&distribution=debian&version=1.22.0.4163-d8c4875dd

Any idea or support on this?

Kind regards

2

I am unable to reproduce with Firefox.

What file formats are you trying to play?
Does this issue occur for all types of music?
If you open Firefox in a private browser window where all of your extensions are disabled are you still able to reproduce the issue?

3

Ok, you helped me on the right track. I tried with private brower and it worked, so I started enabling extensions one by one and its:

600% Sound Volume extension that is the bad guy here.

Somehow its causing issues when using the web player for .mp3 files but not video. Interresting.

Kind regards

4

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