@oSoMoN I tried to do @jamesh suggestion but …
paul@p6t:~$ sudo snap install firefox
firefox 94.0.1-1 from Mozilla✓ installed
paul@p6t:~$ which firefox
/usr/bin/firefox
paul@p6t:~$ /snap/bin/firefox
Importing existing firefox profiles from /home/paul/.mozilla/firefox
Found default profile: r2lxv19d.default-release
Import done in 196.927 s
Gtk-Message: 15:38:57.982: Failed to load module “canberra-gtk-module”
Gtk-Message: 15:38:58.055: Failed to load module “canberra-gtk-module”
[GFX1-]: glxtest: libEGL missing
[GFX1-]: glxtest: libEGL missing
Sorry about the formatting of the above. I couldn’t get the lines not to wrap.
In a popup I get the following message:
Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile.
When I click OK, this is what is displayed in the terminal;
###!!! [Child][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
paul@p6t:~$
And that’s about it.