I was able to reproduce it on an Lubuntu kinetic-desktop-amd64.iso (from 20220927.4) by running:
```
$ PATH=/usr/sbin:/usr/bin:/sbin:/bin xdg-open https://ubuntu.com
/usr/bin/xdg-open: 882: firefox: not found
/usr/bin/xdg-open: 882: firefox: not found
xdg-open: no method available for opening 'https://ubuntu.com'
```
I was able to reproduce it on an Lubuntu kinetic- desktop- amd64.iso (from 20220927.4) by running:
``` sbin:/usr/ bin:/sbin: /bin xdg-open https:/ /ubuntu. com /ubuntu. com'
$ PATH=/usr/
/usr/bin/xdg-open: 882: firefox: not found
/usr/bin/xdg-open: 882: firefox: not found
xdg-open: no method available for opening 'https:/
```