error: system does not fully support snap

[robert rottermann]

Hi there

I have installed:

Distributor ID:    Ubuntu
Description:    Ubuntu 22.04 LTS
Release:    22.04
Codename:    jammy

I have also installed selinux.

trying to start firefox from the command line (probably other apps too) yield in 
the following error message:

error: system does not fully support snapd: cannot mount squashfs image using 
"squashfs": mount: /tmp/sanity-mountpoint-514129075: wrong fs type, bad option, 
bad superblock on /dev/loop32, missing codepage or helper program, or other error.
ERROR: not connected to the gnome-3-38-2004 content interface.


what can I do to fix that.

Do I have to uninstall/deactivate selinux?

thanks

Robert