Package: webext-ublock-origin-firefox
Version: 1.67.0+dfsg-1~deb12u1
I have a problem with Firefox ESR and uBlock on Debian 12:
If I want to watch a Youtube video, Youtube newly shows a white error
message on dark gray background instead of the video, saying: An error
occured. Please try again later. (Playback ID: QzN...)
In German: "Es ist ein Fehler aufgetreten. Bitte versuche es später noch
einmal. (Wiedergabe-ID: QzN...)"
Reloading the page can help and you can watch the video after that! But
that's not always the case.
Cleaning cache and cookie does not change the situation. The installed
packages are as up to date as possible.
Does uBlock maybe need an update in the Debian 12 package repository?
The browser console shows two suspicious error entries:
XHR POST http://www.youtube.com/youtubei/v1/player?prettyPrint=false
[HTTP/2 400]
XHR POST http://www.youtube.com/youtubei/v1/feedback?prettyPrint=false
[HTTP/2 400]
root@deb12laptop ~ # dpkg -l | grep firefox
ii firefox-esr 140.13.0esr-1~deb12u1
amd64 Mozilla Firefox web browser - Extended Support
Release (ESR)
ii firefox-esr-l10n-de 140.13.0esr-1~deb12u1
all German language package for Firefox ESR
ii webext-ublock-origin-firefox 1.67.0+dfsg-1~deb12u1
all lightweight and efficient ads, malware,
trackers blocker (Firefox)
root@deb12laptop ~ # dpkg -l | grep ublock
ii webext-ublock-origin-chromium 1.67.0+dfsg-1~deb12u1
all lightweight and efficient ads, malware,
trackers blocker (Chromium)
ii webext-ublock-origin-firefox 1.67.0+dfsg-1~deb12u1
all lightweight and efficient ads, malware,
trackers blocker (Firefox)
root@deb12laptop ~ # cat /etc/os-release
PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
VERSION_ID="12"
VERSION="12 (bookworm)"
VERSION_CODENAME=bookworm
ID=debian
HOME_URL="https://www.debian.org/";
SUPPORT_URL="https://www.debian.org/support";
BUG_REPORT_URL="https://bugs.debian.org/";
root@deb12laptop ~ # uname -a
Linux deb12laptop 6.1.0-51-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.177-1
(2026-07-16) x86_64 GNU/Linux
