I've asked to Michael Catanzaro that maintains webkit gtk and here's his analysis:
```
Jan 29 08:56:29 hostname org.gnome.Shell.PortalHelper[2906]: bwrap: Creating new namespace failed: Permission denied
Jan 29 08:56:29 hostname gnome-shell-por[2712]: Failed to fully launch dbus-proxy: Child process exited with code 1
```
xdg-dbus-proxy gets run under bubblewrap because we need to put the .flatpak-info file into the filesystem namespace of the xdg-dbus-proxy
It looks like bubblewrap doesn't have permission to create a new user namespace. That's probably an apparmor problem?
Maybe it only happens in a non-default apparmor configuration?
I've asked to Michael Catanzaro that maintains webkit gtk and here's his analysis:
``` Shell.PortalHel per[2906] : bwrap: Creating new namespace failed: Permission denied por[2712] : Failed to fully launch dbus-proxy: Child process exited with code 1
Jan 29 08:56:29 hostname org.gnome.
Jan 29 08:56:29 hostname gnome-shell-
```
xdg-dbus-proxy gets run under bubblewrap because we need to put the .flatpak-info file into the filesystem namespace of the xdg-dbus-proxy
It looks like bubblewrap doesn't have permission to create a new user namespace. That's probably an apparmor problem?
Maybe it only happens in a non-default apparmor configuration?
Maybe a problem with https:/ /ubuntu. com/blog/ ubuntu- 23-10-restricte d-unprivileged- user-namespaces ?