Problems with panel permissions after upgrade

Hi!

I have upgraded the hestia panel to 1.9.1

After doing it, panel returns a 502 error and is not able to get hestia config at /usr/local/hestia/web/inc/main.php:549

This line executes the script

v-list-sys-config json

Returned array is always empty and this causes an exception later when it tries to recover a specific variable.

The script is correctly executed by terminal.
It seems something related with permissions.

If I check the conf file at
/etc/php/8.0/fpm/pool.d/panel_domain.conf
these are the permissions assigned to the panel:

listen.owner = admin
listen.group = www-data
listen.mode = 0660
user = admin
group = admin

Any clue on what I have to check to ensure that panel has the right permissions to execute the hestia sys scripts?