Fails to launch on ubuntu 24.04

[revolverocelot11]

I'm having an issue getting it to launch on ubuntu 24.04. The error given is as below:

[11996:11996:1018/164222.497339:FATAL:setuid_sandbox_host.cc(163)] The SUID sandbox helper binary was found, but is not configured correctly. Rather tahn run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_browse6KFdse/opt/browservice/chrome-sandbox is owned by root and has mode 4755. /tmp/.mount_browse6KFdse/AppRun: line 128: 11996 Trace/breakpoint trap (core dumped) ( exec -a "${ARGV0}" "${ROOT}/opt/browservice/browservice" "$@" )

[ttalvitie]

This appears to be a known issue with Chromium, discussed e.g. in

• https://magpcss.org/ceforum/viewtopic.php?t=19760
• cef crashes on Ubuntu 24 chromiumembedded/cef#3678
• [Bug]: All versions of Electron (chromium upstream bug) fail to open on Ubuntu 24.04+ due to kernel.apparmor_restrict_unprivileged_userns=1 by default electron/electron#41066
• (For some reason, the Chromium issue https://issues.chromium.org/issues/40919649 is not publicly visible)

It appears that you can work around the issue by modifying a kernel parameter, e.g. by running the following command before running Browservice:
sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0